econ-bst (3mar20)

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+%% econ.bst: BibTeX style file for papers in economics.
+%
+% Author: Shiro Takeda
+% Maintainer: Shiro Takeda
+% Copyright (C) 2001-2018 Shiro Takeda
+% First-written:       <2007/07/28>
+% Version: 2.7
+% Keywords: TeX, BibTeX, bst 
+% URL: https://github.com/ShiroTakeda/econ-bst
+
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% The Current Maintainer of this work is Shiro Takeda.
+
+%% Main features of econ.bst.
+
+% "econ.bst" is a BibTeX style file for economics. It provids the following
+% features:
+
+% 1) The author-year type citation (you need "natbib.sty" as well).
+% 2) Reference style used in economics papers ("econ.bst" is not a BibTeX style
+%    for a specific journal).
+% 3) Highly customizable.  You can easily customize reference style as you wish.
+% 4) You can use "certified random order" proposed by Ray ⓡ Robson (2018)
+%    (http://dx.doi.org/10.1257/aer.20161492).
+
+% Bug reports, requests and suggestions are welcome. 
+
+% For changelogs, see CHANGES.txt file.
+
+% version number
+FUNCTION {econ.version} { "2.7" }
+
+% File name
+FUNCTION {econ.file} { "econ.bst" }
+
+% Debug mode. Non-zero makes debug mode on.
+FUNCTION {econ.debug}
+{ #0 }    % Debug mode off (default).
+% { #1 }    % Debug mode on.
+
+ENTRY
+  %%% Declaration of field
+  { access address author booktitle chapter doi edition editor howpublished
+    institution journal key month note number organization pages publisher
+    school series title type url volume year
+  % Fields specific to econ.bst
+    order absorder nameorder
+  }
+
+  % Definition of entry variable.  The entry variable is a variable which has
+  % different values according to different entries.
+  %% Integer entry variable:
+  { order.cited }
+
+  %% String entry variable
+  { label cyear flabel alabel extra.label sort.label sort.label.abb
+    extra.label.bysame nameorder.temp jname }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Use \bysame or not.
+%
+% If set to #0, \bysame is not used.
+% If set to #1, \bysame is used 
+% If set to #2, \bysame is used (alternative abbreviation style).
+%
+% Note that integer number is expressed as # + integer in bst file.
+% \bysame is the function that abbreviates succession of the same authors' name by ---.
+%
+% See econ-sample.pdf for details.
+% 
+FUNCTION {bst.use.bysame}
+{ #0 }    % Not use \bysame
+% { #1 }    % -> Use \bysame (default)
+% { #2 }    % -> Use \bysame of alternative style.
+
+% The definition of \bysame command.
+%
+FUNCTION {bst.bysame.definition}
+{ "\hskip.3em \leavevmode\rule[.5ex]{3em}{.3pt}\hskip0.5em" } % (default)
+% { "\leavevmode\hbox to\leftmargin{\hrulefill\,\,}" } % If you set #2 to bst.use.bysame, use this.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% The order of fist and last name.
+%
+FUNCTION {bst.author.name}
+% { #0 }    % (default)
+{ #1 }
+% { #2 }
+
+% Case of #0: First author -> last-first, other authors -> first-last. 
+% Fujita, Masahisa, Paul R. Krugman, and Anthony J. Venables. 
+
+% Case of #1: All authors -> last-first
+% Fujita, Masahisa, Krugman, Paul R., and Venables, Anthony J.
+
+% Case of #2: All authors -> first-last
+% Masahisa Fujita, Paul R. Krugman, and Anthony J. Venables.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Abbreviate first name of authors (editors):
+%
+FUNCTION {bst.first.name.initial}
+% { #0 }    % #0 -> full letters (default).
+{ #1 }    % Non-zero -> initial letter only.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Decapitalize of strings in title field.
+%
+FUNCTION {bst.title.lower.case}
+% { #0 }    % If #0, not decapitalize title (default).
+{ #1 }    % If non-#0, decapitalize title
+
+% Hide title filed.
+%
+FUNCTION {bst.hide.title}
+{ #0 }    % #0 -> Title field is displayed (default)
+% { #1 }    % Non-zer -> Title field is hidden 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide month.
+%
+FUNCTION {bst.hide.month}
+% { #0 }    % #0 -> show month field (default).
+{ #1 }    % non-#0 -> hide month field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Attach number index like plain.bst.
+%
+FUNCTION {bst.use.number.index}
+{ #0 }    % Not use number index (default).
+% { #1 }    % Non-#0 -> Use number index
+
+% The string before number index:
+%
+FUNCTION {bst.number.index.pre}
+{ "[" }    % (default)
+
+% The string after number index.  Adjustment is recommended.
+%
+FUNCTION {bst.number.index.post}
+{ "]\hskip1.0em " }    % (default)
+
+% Maximum digit of number index:
+% If the number of reference items >= 100, set 3 to this function.
+% If the number of reference items < 100, set 2 to this function.
+% If the number of reference items < 10, set 1 to this function.
+%
+FUNCTION {bst.number.index.digit}
+{ "2" }    % (default)
+% { "3" }
+
+% The functions below are used to adjust space and postion.  If you use fonts
+% other than computer modern fonts, you had better make adjustments.
+%
+% Setting for bst.number.index.digit = 1:
+FUNCTION {bst.number.index.bibhang.one}
+{ "2.05em" }    % (default)
+% Setting for bst.number.index.digit = 2:
+FUNCTION {bst.number.index.bibhang.ten}
+{ "2.55em" }    % (default)
+% Setting for bst.number.index.digit = 3:
+FUNCTION {bst.number.index.bibhang.hund}
+{ "3.05em" }    % (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Position of "year":
+%
+% You can choose the position of year by this function.
+%
+% If set to #0, year is placed right after "author".
+% If set to non-zero, year is placed at the end (before note field) except for
+% aritcle type entry. 
+%
+% In article type entry, the position of year changes according to the
+% following rule:
+% 
+% #1 -> year is placed at the end.
+% #2 -> year is placed after journal name in aritcle type entry.
+% #3 -> year is placed after volume in aritcle type entry.
+%
+FUNCTION {bst.year.position}
+{ #0 }    % (default).
+% { #1 }    % Last place before note.
+% { #2 }    % After journal name for aticle type entry.
+% { #3 }    % After volume for aticle type entry.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If 0, references are sorted by old documents -> recent documents.  If
+% non-zero, reverse order.
+FUNCTION {bst.reverse.year}
+{ #0 }    % Normal order (old -> recent) (default).
+% { #1 }    % inverse order (recent -> old)
+
+% If non-zero, sort references by using year field as the primary key
+% (chronological sorting).
+FUNCTION {bst.sort.year}
+{ #0 }    % Normal case: year is used as the sorting key next to author (default).
+% { #1 }    % year is used as the primary sorting key.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If non-zero, references are listed in citation order.
+%
+FUNCTION {bst.no.sort}
+{ #0 }    % (default)
+% { #1 }    % listed in citation order.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Non-zero -> sort references by entry type (article, book, incollection etc.)
+%
+FUNCTION {bst.sort.entry.type}
+{ #0 }    % #0 -> Normal (not sort references by entry type) (default).
+% { #1 }    % Non-zero -> sort references by entry type.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use absorder field to sort items.  Otherwise, ignore absorder field.
+%
+FUNCTION {bst.notuse.absorder.field}
+{ #0 }    % #0 -> Use absorder (default).
+% { #1 }    % Non-#0 -> Not use absorder.
+%
+% Order of priority to sort items
+% 
+% absorder -> author -> year -> order -> month -> title
+%
+% wehre absorder and order fields are specific to econ.bst.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use order field to sort items.  Otherwise, ignore order field.
+% Note: order field is specific to econ.bst.
+FUNCTION {bst.notuse.order.field}
+{ #0 }    % #0 -> Use order field (default).
+% { #1 }    % Non-#0 -> not use order field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%     and
+
+%%% String used to separate author names in references.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.and}
+{ ", " }
+% { " and " }    % (default)
+
+%%% String used to separate author names in references (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.ands}
+{ ", " }
+% { ", and " }    % (default)
+
+%%% String used to separate author names in citation part.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.cite.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in citation part (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.cite.ands}
+{ " and " }    % (default)
+
+%%% If you want to use random author order for some bibliography entries, set
+% non-zero to this function.
+% 
+FUNCTION {bst.use.nameorder}
+{ #1 }	% Use random order (default)
+% { #0 }	% Not use random order
+
+%%% String used to separate author names in references for the entry of random
+% author order.
+%
+FUNCTION {bst.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+%%% String used to separate author names in citation part for the entry of
+% random author order
+%
+FUNCTION {bst.cite.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Author names in the citation part are abbreviated by et al. if the number of
+% authors is greater or equal to bst.and.others.num.
+FUNCTION {bst.and.others.num}
+{ #3 }    % If the number of authors is greater or equal to three (default).
+
+% If the number of authors is greater or equal to bst.max.author.num, only
+% first author is listed and other authors' names are abbreviated as "et al.".
+FUNCTION {bst.max.author.num}
+{ #12 }    % If the number of authors is greater or equal to 12 (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Strings used when abbreviating multiple-authors in citation part.
+FUNCTION {bst.and.others}
+{ " et~al." }    % (default)
+
+% Strings used when abbreviating multiple-authors in citation part for entries
+% with random author order.
+FUNCTION {bst.and.others.nameorder}
+{ " \textcircled{r}~al." }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       author 
+
+% The string before author:
+%
+FUNCTION {bst.author.pre}
+{ "" }    % (default)
+
+% The string after author:
+%
+FUNCTION {bst.author.post}
+{ "." }
+% { "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       year
+
+% The string before year only for aritcle type entry.
+%
+FUNCTION {bst.year.pre}
+{ " " }
+% { " (" }    % (default)
+
+% The string after year only for aritcle type entry.
+%
+FUNCTION {bst.year.post}
+{ ". " }
+% { ") " }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.pre}
+{ " " }
+% { " (" }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.post}
+{ ". " }
+% { ") " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       title (except for title in book)
+
+% The string before title:
+%
+FUNCTION {bst.title.pre}
+{ "" }
+% { "``" }    % (default)
+
+% The string after title:
+%
+FUNCTION {bst.title.post}
+{ "." }
+% { ",''" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       tile for book:
+
+% The string before book title:
+%
+FUNCTION {bst.book.pre}
+{ " " }
+% { " \textit{" }    % (default)
+
+% The string after book title:
+%
+FUNCTION {bst.book.post}
+{ "." }
+% { "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       booktitle
+
+% The string before booktitle:
+%
+FUNCTION {bst.btitle.pre}
+{ " " }
+% { " \textit{" }    % (default)
+
+% The string after booktitle:
+%
+FUNCTION {bst.btitle.post}
+{ "" }
+% { "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       journal name
+
+% The string before journal name:
+%
+FUNCTION {bst.journal.pre}
+{ " " }
+% { " \textit{" }    % (default)
+
+% The string after journal name:
+%
+FUNCTION {bst.journal.post}
+{ "." }
+% { "}" }    % (default)
+
+% Use the abbreviated journal name
+%
+% If set to #0, do not use abbreviated journal name.
+% If set to non-#0, use abbreviated journal name.
+%
+FUNCTION {bst.journal.name.abb}
+{ #0 }    % (default)
+% { #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       editor notation:
+
+% The string that indicates multiple editors:
+%
+FUNCTION {bst.editors}
+{ " eds. " }    % (default)
+
+% The string that indicates single editor:
+%
+FUNCTION {bst.editor}
+{ " ed. " }    % (default)
+
+% Order of editor and booktitle in incollection and inproceedings entries.
+%
+% If set to #0: 	editors -> booktitle order
+% If set to non-zero:	booktitle -> editors order
+%
+FUNCTION {bst.editor.btitle.order}
+{ #0 }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       edition
+
+% The string before edition:
+%
+FUNCTION {bst.edition.pre}
+{ ", " }    % (default)
+
+% The string after edition:
+%
+FUNCTION {bst.edition.post}
+{ " edition" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       volume
+
+% The string before volume:
+%
+FUNCTION {bst.volume.pre}
+{ ". " }
+% { ", " }    % (default)
+
+% The string after volume:
+%
+FUNCTION {bst.volume.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       number
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide number.  If non-zero, number is suppressed. 
+FUNCTION {bst.hide.number}
+{ #0 }    % #0 -> show number field (default)
+% { #1 }    % non-#0 -> Hide number field.
+
+% The string before number:
+%
+FUNCTION {bst.number.pre}
+{ " (" }    % (default)
+
+% The string after number:
+%
+FUNCTION {bst.number.post}
+{ ")" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       in 
+
+% In
+%
+FUNCTION {bst.in}
+{ " In " }
+% { " in " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       page
+
+% The string before page (multiple pages):
+%
+FUNCTION {bst.pages.pre}
+{ ", " }    % (default)
+
+% The string before page:
+%
+FUNCTION {bst.page.pre}
+{ ", " }    % (default)
+
+% The string after page (multiple pages):
+%
+FUNCTION {bst.pages.post}
+{ "" }    % (default)
+
+% The string after page:
+%
+FUNCTION {bst.page.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       chapter
+
+% The string before chapter:
+%
+FUNCTION {bst.chapter.pre}
+{ ", Chap." }    % (default)
+
+% The string after chapter:
+%
+FUNCTION {bst.chapter.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       month
+
+% The string before month:
+%
+FUNCTION {bst.month.pre}
+{ ", " }    % (default)
+
+% The string after month:
+%
+FUNCTION {bst.month.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       address
+% The string before address:
+%
+FUNCTION {bst.address.pre}
+{ ", " }    % (default)
+
+% The string after address:
+%
+FUNCTION {bst.address.post}
+{ "" }    % (default)
+
+% You can choose the order of address and publisher by this function.
+%
+% If #0,	address -> publisher order (the default value).
+% If non-zero,	publisher -> address order.
+
+FUNCTION {bst.address.position}
+{ #0 }    % Address is placed before publisher (default)
+% { #1 }    % Address is placed after publisher 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       publisher
+
+% The string before publisher:
+%
+FUNCTION {bst.publisher.pre}
+{ ", " }
+% { ": " }    % (default)
+
+% The string after publisher:
+%
+FUNCTION {bst.publisher.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       series
+
+% The string before series:
+%
+FUNCTION {bst.series.pre}
+{ ", " }    % (default)
+
+% The string after series:
+%
+FUNCTION {bst.series.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       organization
+
+% The string before organization:
+%
+FUNCTION {bst.organization.pre}
+{ ", " }    % (default)
+
+% The string after organization:
+%
+FUNCTION {bst.organization.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       school
+
+% The string before school:
+%
+FUNCTION {bst.school.pre}
+{ ", " }    % (default)
+
+% The string after school:
+%
+FUNCTION {bst.school.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       institution
+
+% The string before institution:
+%
+FUNCTION {bst.institution.pre}
+{ ", " }    % (default)
+
+% The string after institution:
+%
+FUNCTION {bst.institution.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       howpublished
+
+% The string before howpublished:
+%
+FUNCTION {bst.howpublished.pre}
+{ " " }    % (default)
+
+% The string after howpublished:
+%
+FUNCTION {bst.howpublished.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       url
+
+% Show or Hide url.  If non-zero, url is displayed. Otherwise, url is suppressed. 
+FUNCTION {bst.show.url}
+% { #1 }    % non-#0 -> Show url field (default)
+{ #0 }    % #0 -> Not show url field.
+
+% The string before url:
+%
+FUNCTION {bst.url.pre}
+{ ", \url{" }	% (default)
+
+% The string after url:
+%
+FUNCTION {bst.url.post}
+{ "}" }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Access
+
+% This setting is valid only if there are "access" field in bib
+% files. The value of access field indicates accessed date for URL.
+
+% The string before access.
+FUNCTION {bst.access.pre}
+{ ", accessed on " } % (default)
+
+% The string after access.
+FUNCTION {bst.access.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       DOI (digital object identifier)
+
+% This setting is valid only if there are "doi" field in bib files.
+
+% Show or Hide DOI.  If non-zero, DOI is displayed. Otherwise, DOI is suppressed. 
+FUNCTION {bst.show.doi}
+% { #1 }    % non-#0 -> Show DOI field (default)
+{ #0 }    % #0 -> Not show DOI field.
+
+% The string before DOI:
+%
+FUNCTION {bst.doi.pre}
+{ ", \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * } % (default)
+
+% The string after DOI:
+%
+FUNCTION {bst.doi.post}
+{ "}}" }	   % (default)
+
+% How to show URL and DOI fields when both fields exist.
+%
+% #0 -> Both fields are displayed
+% #1 -> Only URL field is displayed
+% #2 -> Only DOI field is displayed
+%
+FUNCTION {bst.url.doi}
+% { #0 }    % -> Both fields are displayed
+{ #1 }    % -> Only URL field is displayed
+% { #2 }    % (default) --> Only DOI field is displayed 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Other functions:
+
+% The string before note.
+FUNCTION {bst.note.pre}
+{ ", " }    % (default)
+
+% The string after note.
+FUNCTION {bst.note.post}
+{ "" }    % (default)
+
+% The string that represents Technical report:
+%
+FUNCTION {bst.techrep}
+{ "Technical Report" }    % (default)
+
+% The string that represents master thesis:
+%
+FUNCTION {bst.mthesis}
+{ " Master's thesis" }    % (default)
+
+% The string that represents phd thesis:
+%
+FUNCTION {bst.phdthesis}
+{ " Ph.D. dissertation" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization end here:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FUNCTION {bst.first}
+{ "1st" }
+
+FUNCTION {bst.second}
+{ "2nd" }
+
+FUNCTION {bst.third}
+{ "3rd" }
+
+FUNCTION {bst.fourth}
+{ "4th" }
+
+FUNCTION {bst.fifth}
+{ "5th" }
+
+FUNCTION {bst.st}
+{ "st" }
+
+FUNCTION {bst.nd}
+{ "nd" }
+
+FUNCTION {bst.rd}
+{ "rd" }
+
+FUNCTION {bst.th}
+{ "th" }
+
+%%%%% memo by Takeda
+
+% "a" 'b := indicates substituting string "a" for variable b.
+
+% Integer number #0, #1,...
+
+%%% Function definition:
+%
+% FUNCTION {name}
+% { 's :=
+%
+% }
+%
+% This is the definition of a function named "name".   The function "name" is
+% used in the following way 
+%
+% "foo" name
+% "foo" is an argument for the function "name".
+%
+% About the definition of a function with more than two arguments, see the
+% definition of "chop.word".
+
+%%% Declaration of variables:
+
+%% String global variables:
+STRINGS { s t tt }
+STRINGS { year.num }
+STRINGS { preone preten }
+STRINGS { last.sort.label next.extra prev.author prev.author.aer this.author }
+STRINGS { hang }
+STRINGS { item.type }
+STRINGS { tempa tempb }
+
+%% Integer global variables:
+INTEGERS { nameptr namesleft numnames name.num }
+INTEGERS { multiresult }
+INTEGERS { index }
+INTEGERS { len }
+INTEGERS { last.extra.num }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+INTEGERS { last.period.comma }
+INTEGERS { len1.aer len2.aer i.aer }
+
+%%% Definition of functions:
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+
+%%% Initialize variables:
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+
+%%% Remove comma and add period:
+%
+%%%
+FUNCTION {add.period.x}
+{ duplicate$
+  #-1 #1 substring$ "," =
+    { #-2 global.max$ substring$ "." * }
+    { duplicate$
+      #-1 #2 substring$ ". " =
+        { #-3 global.max$ substring$ "." * }
+        { duplicate$
+          #-1 #2 substring$ ", " =
+            { #-3 global.max$ substring$ "." * }
+            { duplicate$
+              #-1 #2 substring$ ",'" =
+                { #-3 global.max$ substring$ ".'" * }
+                { duplicate$
+                  #-1 #2 substring$ ".'" =
+                    { #-3 global.max$ substring$ ".'" * }
+                    { duplicate$
+                      #-1 #2 substring$ ".~" =
+                        { #-3 global.max$ substring$ ".~" * }
+                        { duplicate$
+                          #-1 #2 substring$ ",~" =
+                            { #-3 global.max$ substring$ ".~" * }
+                            { duplicate$
+                              #-1 #3 substring$ ",''" =
+                                { #-4 global.max$ substring$ ".''" * }
+                                { duplicate$
+                                  #-1 #3 substring$ ".''" =
+                                    { #-4 global.max$ substring$ ".''" * }
+                                    { add.period$ }
+                                  if$
+                                }
+                              if$
+                            }
+                          if$
+                        }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {output.nonnull}
+{ 's :=
+  % mid.sentence
+  output.state mid.sentence =
+    { ", " * write$ }
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period.x " " * write$ }
+          if$
+        }
+      if$
+      % not mid.sentence, set to mid.sentence
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+
+%%% If the last character is period or comma, set non-zero to
+%%% last.period.comma.
+FUNCTION {period.comma.p}
+{ duplicate$ 't :=
+  t #-1 #1 substring$ "." = 
+  t #-1 #1 substring$ "," = or
+  t #-1 #1 substring$ ":" = or 
+  t #-1 #2 substring$ ".'" = or
+  t #-1 #2 substring$ ",'" = or
+  t #-1 #3 substring$ ".''" = or
+  t #-1 #3 substring$ ",''" = or
+  t #-1 #2 substring$ ".~" = or
+  t #-1 #2 substring$ ",~" = or
+    { #1 'last.period.comma := }
+    { #0 'last.period.comma := }
+  if$
+}
+
+%%% remove unnecessary comma.
+FUNCTION {remove.pre.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #1 #1 substring$ "," = 
+       { s #2 global.max$ substring$ }
+       { s #1 #1 substring$ "." = 
+          { s #2 global.max$ substring$ }
+          's
+         if$
+       }
+      if$
+    }
+  if$
+}
+
+%%% output.nonnull.nocomma is the same as output.nonnull except that it does
+%%% not add commas even in mid.sentence.
+FUNCTION {output.nonnull.nocomma}
+{ 's :=
+  output.state mid.sentence =
+    % mid.sentence
+    { period.comma.p "" * write$ }
+
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  last.period.comma #0 =
+    { s }
+    { s remove.pre.comma }
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output}
+% { duplicate$ empty$
+%     'pop$
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.nocomma}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull.nocomma
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output.check}
+% { 't :=
+%   duplicate$ empty$
+%     { pop$ "empty " t * " in " * cite$ * warning$ }
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.check.nocomma}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull.nocomma
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Format in bbl file:
+
+% \harvarditem[Brezis et~al.]{Brezis, Krugman and
+%   Tsiddon}{1993}{brezis93:_leapf_inter_compet}
+% Brezis, Elise~S., Paul~R. Krugman, and Daniel Tsiddon  (1993) ``Leapfrogging in
+%   International Competition: A Theory of Cycles in National Technological
+%   Leadership.'', {\em American Economic Review.}, Vol.~83. No.~5. pp.
+%   1211--1219.
+
+% \harvarditem[abbreviated citation]{full citation}{year}{keyword} ...
+
+%%% Add period and newline.
+FUNCTION {fin.entry}
+{ add.period.x
+  write$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+
+FUNCTION {new.block.check}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+
+%%% booktitle
+FUNCTION {format.btitle}
+{ booktitle empty$
+    { "" }
+    { bst.btitle.pre booktitle * bst.btitle.post * }
+  if$
+}
+
+FUNCTION {journal.name.sub}
+{ 't :=
+  t #1 #4 substring$ "The " =
+    % Use #30 to handle with the long journal name.
+    { t #5 #30 substring$ 't := }
+    'skip$
+  if$
+  t
+}
+
+FUNCTION {format.journal.name.abb}
+{ journal 's :=
+  journal 'jname :=
+  s journal.name.sub 's :=
+  bst.journal.name.abb #0 =
+    'skip$
+    { 
+       s "Academic Management Review" =
+        { "Acad. Manage. J." 'jname := }
+        'skip$
+      if$
+    }
+  if$
+  jname
+}
+
+%%% journal
+FUNCTION {format.journal}
+{ journal empty$
+    { "" }
+    { bst.journal.pre format.journal.name.abb * bst.journal.post * }
+  if$
+}
+
+%%% title for book
+FUNCTION {format.book}
+{ title empty$
+    { "" }
+    { bst.book.pre title * bst.book.post * }
+  if$
+}
+
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+    { type$ "online" = bst.show.url or
+        { bst.url.pre url * bst.url.post *
+          access empty$
+             { "" * }
+             { bst.access.pre * access * bst.access.post * }
+          if$
+        }
+        { "" }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.doi}
+{ doi empty$ bst.show.doi not or
+    { "" }
+    { bst.doi.pre doi * bst.doi.post * }
+  if$
+}
+
+FUNCTION {format.url.doi}
+{ url empty$
+    { format.doi }
+    { doi empty$
+        { format.url }
+        { bst.url.doi #0 =
+            { format.url output.nocomma
+              format.doi }
+            { bst.url.doi #1 =
+                { format.url } 
+                { format.doi }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% and others
+FUNCTION {bst.and.others.output}
+{ nameorder.temp "random" =
+  bst.use.nameorder #0 = not and
+    { bst.and.others.nameorder }
+    { bst.and.others }
+  if$
+}
+
+%%% author and editor
+
+%%% name
+FUNCTION {format.names}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+
+  { nameptr #1 =
+      % First author
+      { bst.author.name #0 =
+        bst.author.name #1 =
+        or
+           { bst.first.name.initial #0 = 
+            { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+            { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+           if$
+         }
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+           if$
+         }
+        if$
+      }
+      % The second or later authors
+      { bst.author.name #0 =
+        bst.author.name #2 =
+        or
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+             if$
+           }
+           { bst.first.name.initial #0 = 
+                { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+                { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+             if$
+           }
+        if$
+      }
+    if$
+    
+    nameptr #1 >
+      % The second or later authors
+      { numnames bst.max.author.num >
+          { bst.and.others * 
+            #1 'namesleft :=  }
+          { nameorder.temp "random" =
+            bst.use.nameorder #0 = not and
+              { bst.and.nameorder * t * }
+              { namesleft #1 >
+                  % More than one authors left
+                  { ", " * t * }
+                  % Only one author left
+                  { t "others" =
+                      { bst.and.others.output * }
+                      { numnames #2 =
+                          % Entry with two authors
+                          { bst.and * t * }
+                          { bst.ands * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% remove successive periods (commas) from author
+FUNCTION {remove.ss.period.auth}
+{ 's :=
+  s format.names 'tempa :=
+  bst.author.post 'tempb :=
+  tempb #1 #1 substring$ "}" =
+    { tempa tempb * }
+    { tempa #-1 #1 substring$ tempb #1 #1 substring$ = 
+        { tempa tempb #2 global.max$ substring$ * }
+        { tempa tempb * }
+      if$
+    }
+  if$
+}
+
+% <prev name list> <new name list> compare.names <modified name list>
+FUNCTION {compare.names.aer}
+{ 's :=
+  'tempa :=
+
+%   "current.author = " s * "\\" * write$ newline$
+%   "prev.author = " tempa * "\\" * write$ newline$
+
+  tempa num.names$ 'len1.aer :=  % len1 = the number of previous authors
+  s num.names$ 'len2.aer :=         % len2 = the number of current authors
+
+% len1.aer := min(len1.aer,len2.aer)
+% len1 -> min{ the number of previous authors, the number of current authors }
+  len1.aer len2.aer >
+    { len2.aer 'len1.aer := }
+    { }
+  if$
+
+% start with an empty string, then while the components are the same
+% add "\bysame"
+  ""
+  #1 'i.aer :=
+
+  { i.aer len1.aer > not }
+    { tempa i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      =
+        { #1 i.aer <
+            { " and " * }       % \bysame で省略する著者の前につく and 
+            { }
+          if$
+          "\bysame{}" *
+          i.aer #1 + 'i.aer := } 
+        { #-1 'len1.aer := }
+      if$
+    }
+  while$
+
+% add the rest of the second string
+  { i.aer len2.aer > not }
+    { #1 i.aer <
+        { " and " * }
+        { }
+      if$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$ *
+      i.aer #1 + 'i.aer :=
+    }
+  while$
+}
+
+%%% author
+FUNCTION {format.authors}
+{ author empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer author compare.names.aer 's :=
+          author 'prev.author.aer := }
+        { author 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors}
+{ editor empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer editor compare.names.aer 's :=
+          editor 'prev.author.aer := }
+        { editor 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+      s num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.authors.alt}
+{ author empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        {"\bysame "}
+        { bst.author.pre author remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors.alt}
+{ editor empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre editor remove.ss.period.auth * }
+      if$
+      editor num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+%%% format.in.ed.booktitle
+FUNCTION {format.editors.x}
+{ editor empty$
+    { "" }
+    { bst.editor.btitle.order #0 =
+        { "" }
+        { editor num.names$ #1 >
+           { bst.editors " by " * }
+           { bst.editor  " by " * }
+          if$
+        }
+      if$
+      editor format.names *
+      bst.editor.btitle.order #0 =
+        { editor num.names$ #1 >
+           { bst.editors * }
+           { bst.editor * }
+          if$
+        }
+        { "" * }
+      if$
+    }
+  if$
+}
+
+%%% Remove commas in the cases like "?." and "?,".
+FUNCTION {remove.irrelevant.period.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #-1 #3 substring$ "?,'" =
+      s #-1 #3 substring$ "?.'" = or
+        { s #-3 global.max$ substring$ "'" * }
+        { s #-1 #4 substring$ "?,''" =
+          s #-1 #4 substring$ "?.''" = or
+            { s #-4 global.max$ substring$ "''" * }
+            { s #-1 #2 substring$ "?," =
+              s #-1 #2 substring$ "?." = or
+                { s #-2 global.max$ substring$ "" * }
+                { s #-1 #3 substring$ "?,~" =
+                  s #-1 #3 substring$ "?.~" = or
+                    { s #-4 global.max$ substring$ "?~" * }
+                    's
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% title
+FUNCTION {format.title.sub}
+{ bst.title.lower.case #0 =
+     { bst.title.pre title * bst.title.post * }
+     { bst.title.pre title "t" change.case$ * bst.title.post * }
+  if$
+}
+
+%%% title
+FUNCTION {format.title}
+{ title empty$
+  bst.hide.title #0 = not or
+    { "" }
+    { format.title.sub remove.irrelevant.period.comma }
+  if$
+}
+
+%%% title for misc.
+FUNCTION {format.misc.title}
+{ title empty$
+    { "" }
+    { bst.title.pre title * bst.title.post * }
+  if$
+}
+
+% Convert "-" to "--" (for pages field)
+FUNCTION {n.dashify}
+{ 't :=
+  ""
+  %% while$
+  { t empty$ not }
+  { t #1 #1 substring$ "-" =
+      { t #1 #2 substring$ "--" = not
+          { "--" *
+            t #2 global.max$ substring$ 't :=
+          }
+          { { t #1 #1 substring$ "-" = }
+            { "-" *
+              t #2 global.max$ substring$ 't :=
+            }
+            while$
+          }
+        if$
+      }
+      { t #1 #1 substring$ *
+       t #2 global.max$ substring$ 't :=
+      }
+    if$
+  }
+  while$
+}
+
+%%% year
+FUNCTION {format.year}
+{ year empty$
+    { "there's no year in " cite$ * warning$
+      ", " }
+    { type$ "article" =
+        { bst.year.pre year * extra.label * bst.year.post * }
+        { bst.year.na.pre year * extra.label * bst.year.na.post * }
+      if$
+    }
+  if$
+}
+
+%%% page for book
+FUNCTION {format.book.pages}
+{ pages empty$
+    { "" }
+    { bst.pages.pre pages * bst.pages.post * }
+  if$
+}
+
+%%% Attach tie for the string with two or less characters.
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+    { "~" }
+    { " " }
+  if$
+  swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+
+%%% volume for book
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+    { bst.volume.pre volume * bst.volume.post *
+      series empty$
+        'skip$
+        %% If there is series field
+        { " of " * series * bst.series.post * }
+      if$
+%       "volume and number" number either.or.check
+    }
+  if$
+}
+
+%%% series
+FUNCTION {output.series}
+{ series empty$
+    { "" }
+    { bst.series.pre series * bst.series.post * }
+ if$
+}
+
+%%% number and series
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+      bst.hide.month #0 = not or
+        % number is empty
+        { series empty$
+            { "" }
+            % series is not empty.
+            { output.series }
+          if$
+        }
+        % number is not empty$
+        { series empty$
+            { bst.number.pre number * bst.number.post * }
+            % series is not empty.
+            { bst.in bst.series.pre * series * bst.series.post *
+              bst.number.pre * number * bst.number.post * }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+%%% Number or not.
+FUNCTION {is.num}
+{ chr.to.int$
+  duplicate$ "0" chr.to.int$ < not
+  swap$ "9" chr.to.int$ > not and
+}
+
+FUNCTION {extract.num}
+{ duplicate$ 't :=
+  "" 's :=
+  { t empty$ not }
+  { t #1 #1 substring$
+    t #2 global.max$ substring$ 't :=
+    duplicate$ is.num
+      { s swap$ * 's := }
+      { pop$ "" 't := }
+    if$
+  }
+  while$
+  s empty$
+    'skip$
+    { pop$ s }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%      edition
+
+% Convert edition to 1st, 2nd, 3rd, 4th etc
+FUNCTION {eng.ord}
+{ duplicate$ "1" swap$ *
+  #-2 #1 substring$ "1" =
+     { bst.th * }
+     { duplicate$ #-1 #1 substring$
+       duplicate$ "1" =
+         { pop$ bst.st * }
+         { duplicate$ "2" =
+             { pop$ bst.nd * }
+             { "3" =
+                 { bst.rd * }
+                 { bst.th * }
+               if$
+             }
+           if$
+          }
+       if$
+     }
+   if$
+}
+
+% Convert first, second etc in edition field to 1st, 2nd (from jfm.bst)
+FUNCTION {convert.edition}
+{ edition extract.num "l" change.case$ 's :=
+  s "first" = s "1" = or
+    { bst.first }
+    { s "second" = s "2" = or
+        { bst.second }
+        { s "third" = s "3" = or
+            { bst.third }
+            { s "fourth" = s "4" = or
+                { bst.fourth }
+                { s "fifth" = s "5" = or
+                    { bst.fifth }
+                    { s #1 #1 substring$ is.num
+                        { s eng.ord }
+                        { edition }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% edition
+FUNCTION {format.edition}
+{ edition empty$
+    { "" }
+    { output.state mid.sentence =
+        { bst.edition.pre convert.edition "l" change.case$ * bst.edition.post * }
+        { bst.edition.pre convert.edition "t" change.case$ * bst.edition.post * }
+      if$
+    }
+  if$
+}
+
+%%% month
+FUNCTION {format.month}
+{ month empty$
+  bst.hide.month #0 = not or
+    { "" }
+    { bst.month.pre month * bst.month.post * }
+  if$
+}
+
+%%% year and month
+FUNCTION {format.date}
+{ format.month format.year *
+}
+
+%%% Is multiple pages like 1-100?
+FUNCTION { multi.page.check }
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+
+%%% pages
+FUNCTION {format.pages}
+{ pages empty$
+    { "" }
+    { pages multi.page.check
+      { bst.pages.pre pages n.dashify tie.or.space.connect * bst.pages.post }
+      { bst.page.pre pages tie.or.space.connect * bst.page.post }
+     if$
+    }
+ if$
+}
+
+%%% number
+FUNCTION {format.number}
+{ number empty$
+  bst.hide.number #0 = not or
+    { "" }
+    { bst.number.pre number * bst.number.post * }
+  if$
+}
+
+%%% volume
+FUNCTION {format.volume}
+{ volume empty$
+    'skip$
+    { bst.volume.pre volume * bst.volume.post *
+      bst.year.position #3 =
+        { format.year * }
+        'skip$
+      if$
+    }
+  if$
+}
+
+%%% number, page
+FUNCTION {format.number.pages}
+{ number empty$
+    { format.pages }
+    { format.number format.pages * }
+  if$
+}
+
+%%% volume, page
+FUNCTION {format.volume.pages}
+{ volume empty$
+    { format.pages }
+    { format.volume format.pages * }
+  if$
+}
+
+%%% volume, number, page
+FUNCTION {format.volume.number.pages}
+{ volume empty$
+    { number empty$
+        { format.pages }
+        { format.number format.pages * }
+      if$
+    }
+    { number empty$
+        { format.volume format.pages * }
+        { format.volume format.number * format.pages * }
+      if$
+    }
+  if$
+}
+
+% volume, number, page
+FUNCTION {format.vol.num.pages}
+{ volume empty$
+    %% volume is empty.
+    { number empty$
+        %% number is empty.
+        { pages empty$
+            % warning
+            { "there is no volume, number, and pages in " cite$ * warning$ "" } 
+            { "" format.pages * }
+         if$
+        }
+        %% number is not empty.
+        % warning
+        { "there's a number but no volume in " cite$ * warning$
+          format.number.pages }
+     if$
+    }
+    %% volume is not empty.
+    { number empty$
+        %% number is empty.
+        { format.volume.pages }
+        %% number is not empty.
+        { format.volume.number.pages }
+     if$
+    }
+  if$
+}
+
+%%% chapter
+FUNCTION {format.chapter}
+{ chapter empty$
+    { "" }
+    { type empty$
+        { bst.chapter.pre chapter tie.or.space.connect * bst.chapter.post }
+        { ", " * type " " * chapter * }
+      if$
+    }
+  if$
+}
+
+%%% chapter, pages
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    { pages empty$
+        { "" }
+        { "" format.pages * }
+      if$
+    }
+    { pages empty$
+        { "" format.chapter * }
+        { "" format.chapter * format.pages * }
+      if$
+    }
+  if$
+}
+
+%%% editor and booktitle
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+    { "" }
+    { editor empty$
+        { bst.in format.btitle * }
+        { bst.editor.btitle.order #0 =
+            { bst.in format.editors.x * " " * format.btitle * }
+            { bst.in format.btitle * " " * format.editors.x * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% howpublished
+FUNCTION {format.howpublished}
+{ howpublished empty$
+    { "" }
+    { bst.howpublished.pre howpublished * bst.howpublished.post * }
+  if$
+}
+
+%%% address
+FUNCTION {format.address}
+{ address empty$
+    { "" }
+    { bst.address.pre address * bst.address.post * }
+  if$
+}
+
+%%% publisher
+FUNCTION {format.publisher}
+{ publisher empty$
+    { "" }
+    { bst.publisher.pre publisher * bst.publisher.post * }
+  if$
+}
+
+%%% organization
+FUNCTION {format.organization}
+{ organization empty$
+    { "" }
+    { bst.organization.pre organization * bst.organization.post * }
+  if$
+}
+
+%% publisher and address
+FUNCTION {output.publisher.address}
+{ address empty$
+    { format.publisher "publisher" output.check.nocomma }
+    { bst.address.position #0 = 
+        { format.address output.nocomma
+          format.publisher "publisher" output.check.nocomma }
+        { format.publisher "publisher" output.check.nocomma
+          format.address output.nocomma }
+      if$
+    }
+  if$
+}
+
+%% address, organization, publisher
+FUNCTION {output.address.organization.publisher}
+{ address empty$
+    %% address is empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            'skip$
+            { format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            { format.organization "organization" output.check.nocomma }
+            { format.organization "organization" output.check.nocomma
+              format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+     if$
+    }
+    %% address is not empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            %% publisher is empty
+            { format.address output.nocomma }
+            %% publisher is not empty
+            { bst.address.position #0 =
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            %% publisher is empty
+            { format.organization "organization" output.check.nocomma
+              format.address output.nocomma }
+            %% publisher is not empty
+            { format.organization "organization" output.check.nocomma
+              bst.address.position #0 = 
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+     if$
+    }
+  if$
+}
+
+%%% misc
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+    'skip$
+    { pop$ " " type * }
+  if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+    { bst.techrep }
+    { " " type * }
+  if$
+  number empty$
+    { "t" change.case$ }
+    { number tie.or.space.connect }
+  if$
+}
+
+%%% phdthesis
+FUNCTION {format.phd}
+{ bst.phdthesis }
+
+%%% mastersthesis
+FUNCTION {format.mthesis}
+{ bst.mthesis }
+
+%%% school
+FUNCTION {format.school}
+{ school empty$
+    { "" }
+    { bst.school.pre school * bst.school.post * }
+  if$
+}
+
+%%% institution
+FUNCTION {format.institution}
+{ institution empty$
+    { "" }
+    { bst.institution.pre institution * bst.institution.post * }
+  if$
+}
+
+%%% remove first ? characters.
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+
+FUNCTION {format.note}
+{ note empty$
+    { "" }
+    { bst.note.pre note * bst.note.post * }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        \havarditem
+
+FUNCTION {output.bibitem}
+{ newline$
+  "\harvarditem[" write$
+  alabel write$                 % alabel <- abbreviated citation
+  "]{" write$
+  flabel write$                 % flabel <- full citation
+  "}{" write$
+  cyear write$
+  % cyear = year
+  "}{" write$
+  cite$ write$                  % cite$ -> pusch keyword
+  "}" write$
+  % If number index is on
+  bst.use.number.index #0 =
+     'skip$
+     { index #1 + 'index :=
+       "" 'preone :=
+       "" 'preten :=
+       bst.number.index.digit "1" =
+         'skip$
+         { bst.number.index.digit "2" =
+           { "\hskip0.5em" 'preone := }
+           { bst.number.index.digit "3" =
+              { "\hskip1em" 'preone :=
+                "\hskip0.5em" 'preten := }
+              'skip$
+             if$
+           }
+         if$
+         }
+       if$  
+     }
+  if$
+  newline$
+  before.all 'output.state :=
+  ""
+  % number index
+  bst.use.number.index #0 =
+     'skip$
+     { index #10 <
+         % Insert spaces according to digit of number index.
+         { preone }
+         { index #100 <
+             { preten }
+             { "" }
+           if$
+         }
+       if$
+       bst.number.index.pre * index int.to.str$ * bst.number.index.post * write$
+     }
+ if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        article
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.journal "journal" output.check.nocomma
+  bst.year.position #2 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+  format.vol.num.pages output.nocomma
+
+  bst.year.position #1 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        book
+
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check 
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  format.edition output.nocomma
+  format.book.pages output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        booklet
+
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output.nocomma
+  format.year output.nocomma
+  format.misc.title "title" output.check.nocomma
+  format.howpublished output.nocomma
+  format.address output.nocomma
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inbook
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+%   format.book remove.pre.comma "title" output.check.nocomma
+  format.book "title" output.check.nocomma
+  format.edition output.nocomma
+
+  format.bvolume output.nocomma
+  format.chapter.pages "chapter and pages" output.check.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       incollection
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.edition output.nocomma
+  format.chapter.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inproceedings
+
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  format.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       conference
+
+FUNCTION {conference}
+{ inproceedings }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       manual
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization empty$
+        'skip$
+        { organization output.nonnull.nocomma
+          address output.nocomma
+        }
+      if$
+    }
+    { format.authors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  author empty$
+    { organization empty$
+        { format.address new.block.check
+          format.address output.nocomma
+        }
+        'skip$
+      if$
+    }
+    { output.address.organization.publisher }
+  if$
+  format.edition output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       mastersthesis
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.mthesis format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       misc
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Online
+
+FUNCTION {online}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       phdthesis
+
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  format.phd
+  format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  address empty$
+    'skip$
+    { format.address output.nocomma }
+  if$
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       proceedings
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization output.nocomma }
+    { format.editors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.btitle remove.pre.comma "title" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       techreport
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.tr.number output.nonnull.nocomma
+  format.institution "institution" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       unpublished
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  bst.year.position #0 = not
+    { format.date remove.pre.comma output.nocomma }
+    { month empty$
+        'skip$
+        { format.month remove.pre.comma output.nocomma }
+      if$
+    }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note "note" output.check.nocomma
+  fin.entry
+}
+
+FUNCTION {default.type}
+{ misc }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Alias for month names:
+
+MACRO {jan} {"January"}
+MACRO {feb} {"February"}
+MACRO {mar} {"March"}
+MACRO {apr} {"April"}
+MACRO {may} {"May"}
+MACRO {jun} {"June"}
+MACRO {jul} {"July"}
+MACRO {aug} {"August"}
+MACRO {sep} {"September"}
+MACRO {oct} {"October"}
+MACRO {nov} {"November"}
+MACRO {dec} {"December"}
+
+%%% Read entries:
+READ
+
+%%% Variable for remembering the order of citation.
+INTEGERS { order.num }
+FUNCTION {initialize.order.num}
+{
+  #1 'order.num :=
+}
+%%% Initialize a variables
+EXECUTE {initialize.order.num}
+
+%%% Variable for remembering the order of citation.
+FUNCTION {set.order.cited}
+{
+  order.num 'order.cited :=
+  #1 order.num + 'order.num :=
+}
+%%% Iterate for all entries:
+ITERATE {set.order.cited}
+
+%%% check the value of nameorder field.
+FUNCTION {set.nameorder}
+{ nameorder empty$
+    { "" 'nameorder.temp := }
+    { nameorder 'nameorder.temp := }
+  if$
+}
+%%% Iterate for all entries:
+ITERATE {set.nameorder}
+
+%%% Remove symbols and convert to lowercase.
+FUNCTION {sortify}
+{ purify$ "l" change.case$ }
+
+%%% names for sorting
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { nameptr #1 >
+        { ", " * }
+        'skip$
+      if$
+      s nameptr "{ll}{ f}{ j}" format.name$ 't :=
+      nameptr numnames = t "others" = and
+        { bst.and.others.output *}
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.names.abb}
+{ 's :=
+  s num.names$ 'numnames :=
+  numnames bst.and.others.num <
+     { s sort.format.names }
+     { s #1 "{ll}{ f}{ j}" format.name$ " zz " * }
+  if$
+}
+
+%%% Label for full author name.
+FUNCTION {format.lab.names.full}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{vv~}{ll}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                  { bst.and.nameorder * t * }
+                  { ", " * t * }
+                if$
+              }
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 > 
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.ands * t * }
+                        if$
+                      }
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.and * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+  numnames #1 > #1 #2 = and {", eds" *} {} if$
+  numnames #1 = #1 #2 = and {", ed" *} {} if$
+}
+
+%%% laberl for abbreviated author name.
+FUNCTION {format.lab.names.abb}
+{ 's :=
+   s num.names$ 'numnames :=
+   numnames bst.and.others.num <
+     % if the number of authors is less than bst.and.others.num, full name.
+     { s format.lab.names.full }
+     % if the number of authors is equal or more than bst.and.others.num, abbreviated name.
+     { s #1 "{ll}" format.name$ bst.and.others.output * }
+   if$
+}
+
+%%% abbreviated author
+FUNCTION {author.key.label.abb}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.key.label.full}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {format.names.full.wo.and}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{ll}{, ff}{, jj}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { " " * t * }
+              { t "others" =
+                  { " " * }
+                  { numnames #2 > 
+                      { " " * t * }
+                      { " " * t * }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+}
+
+FUNCTION {author.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.editor.key.full.wo.and}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.names.full.wo.and }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {editor.key.organization.key.full.wo.and}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.key.organization.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+%%% abbreviated author
+FUNCTION {author.editor.key.label.abb}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.abb }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.editor.key.label.full}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.full }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.full}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.abb}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.full}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.full }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.abb}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.abb }
+  if$
+}
+
+%%% Convert numbers: 0->9, 1->8, 2->7,..., 9->0
+FUNCTION {reverse.num}
+{ 's :=
+  s "1" =
+    { "8" 'year.num := }
+    { s "2" =
+        { "7" 'year.num := }
+        { s "3" =
+            { "6" 'year.num := }
+            { s "4" =
+                { "5" 'year.num := }
+                { s "5" =
+                    { "4" 'year.num := }
+                    { s "6" =
+                        { "3" 'year.num := }
+                        { s "7" =
+                            { "2" 'year.num := }
+                            { s "8" =
+                                { "1" 'year.num := }
+                                { s "9" =
+                                    { "0" 'year.num := }
+                                    { s "0" =
+                                        { "9" 'year.num := }
+                                        { "9" 'year.num := }
+                                    if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+  year.num
+}
+
+%%% Convert year (large number -> small number)
+FUNCTION {convert.year}
+{ 't := 
+  bst.reverse.year #0 =
+    { t 'tt := }
+    { t #1 #1 substring$ reverse.num 
+      t #2 #1 substring$ reverse.num *
+      t #3 #1 substring$ reverse.num *
+      t #4 #1 substring$ reverse.num * 'tt := }
+  if$
+  tt
+}
+
+%%% cyear
+FUNCTION {calc.cyear}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.full.wo.and
+    { type$ "proceedings" =
+        'editor.key.organization.key.full.wo.and
+        { type$ "manual" =
+            'author.key.organization.key.full.wo.and
+            'author.key.full.wo.and
+          if$
+        }
+      if$
+    }
+  if$
+  duplicate$
+  year empty$
+    { "2199" 'cyear := }
+    { year 'cyear := }
+  if$
+  year empty$
+    { " " "2199" convert.year * field.or.null * }
+    { " " year convert.year * field.or.null * }
+  if$
+  sortify 'sort.label :=
+  % For debug
+  econ.debug #0 = not
+    { "sort.label = ``\texttt{" write$
+      sort.label write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+ pop$
+}
+
+FUNCTION {calc.sort.label.abb}
+{ author empty$
+    { editor empty$
+       { "" }
+       { editor 's := }
+      if$
+    }
+    { author 's := }
+  if$
+  s sort.format.names.abb 't :=
+  year empty$
+    { t sortify " " * "2199" convert.year * 'sort.label.abb := }
+    { t sortify " " * year convert.year * 'sort.label.abb := }
+  if$
+  econ.debug #0 = not
+    { "sort.label.abb = ``\texttt{" write$
+      sort.label.abb write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+  if$
+}
+
+%%% flabel
+FUNCTION {calc.flabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.full
+    { type$ "proceedings" =
+        'editor.key.organization.label.full
+        { type$ "manual" =
+            'author.key.organization.label.full
+            'author.key.label.full
+          if$
+        }
+      if$
+    }
+  if$
+  'flabel :=
+  author empty$
+    'skip$
+    { author num.names$ 'numnames :=
+      numnames bst.max.author.num >
+        { alabel 'flabel := }
+        'skip$
+      if$
+    }
+  if$
+  % For debug
+  econ.debug #0 = not
+    { "flabel = ``\texttt{" write$
+      flabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% alabel
+FUNCTION {calc.alabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.abb
+    { type$ "proceedings" =
+        'editor.key.organization.label.abb
+        { type$ "manual" =
+            'author.key.organization.label.abb
+            'author.key.label.abb
+          if$
+        }
+      if$
+    }
+  if$
+  'alabel :=
+  % For debug
+  econ.debug #0 = not
+    { "alabel = ``\texttt{" write$
+      alabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% title for sorting
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+
+%%% author for sorting
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+%%% editor for sorting
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+
+%%% 1,...,9 -> 001,...,009
+%%% 10,...,99 -> 010,...,099
+FUNCTION {add.zero.to.number}
+{ 's :=
+    s text.length$ #1 =
+      { "00" s * }
+      { s text.length$ #2 =
+          { "0" s * }
+          { s }
+        if$
+      }
+   if$
+}
+
+%% entry type
+FUNCTION {bst.sort.entry.type.order}
+{ 'item.type :=
+  item.type "article" =
+    { "01" }
+    { item.type "book" =
+        { "02" }
+        { item.type "booklet" =
+            { "03" }
+            { item.type "comment" =
+                { "04" }
+                { item.type "conference" =
+                    { "05" }
+                    { item.type "inbook" =
+                        { "06" }
+                        { item.type "incollection" =
+                            { "07" }
+                            { item.type "inproceedings" =
+                                { "08" }
+                                { item.type "manual" =
+                                    { "09" }
+                                    { item.type "masterthesis" =
+                                        { "10" }
+                                        { item.type "misc" =
+                                           { "11" }
+                                           { item.type "phdthesis" =
+                                              { "12" }
+                                              { item.type "proceedings" =
+                                                 { "13" }
+                                                 { item.type "techreport" =
+                                                    { "14" }
+                                                    { item.type "unpublished" =
+                                                       { "15" }
+                                                       { "16" }
+                                                      if$
+                                                    }
+                                                   if$
+                                                 }
+                                                if$
+                                              }
+                                             if$
+                                           }
+                                          if$
+                                        }
+                                      if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+}
+
+%%% Create sort.key$: absorder -> author -> year -> order -> month -> title.
+FUNCTION {presort.one}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " *
+  sort.label.abb *
+  " " *  
+  type$ "book" = type$ "inbook" = or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  * " " *
+  " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " * sort.label * " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% Codes for debugging
+FUNCTION {calc.alabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.alabel: alabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {calc.flabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.flabel: flabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {presort.one.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (1st time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (2nd time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.cyear.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.cyear: sort.label = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.sort.label.abb.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.sort.label.abb: sort.label.abb = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+%%% alabel
+EXECUTE {calc.alabel.mess}
+ITERATE {calc.alabel}
+
+%%% flabel
+EXECUTE {calc.flabel.mess}
+ITERATE {calc.flabel}
+
+%%% cyear and sort.label
+EXECUTE {calc.cyear.mess}
+ITERATE {calc.cyear}
+
+%%%
+EXECUTE {calc.sort.label.abb.mess}
+ITERATE {calc.sort.label.abb}
+
+%%% Sorting by $sort.key (first time)
+%
+% Sorting is done in two times. This is the first time.
+%
+EXECUTE {presort.one.mess}
+ITERATE {presort.one}
+SORT
+
+FUNCTION {forward.pass}
+{ bst.use.bysame #0 = bst.use.bysame #2 = or
+    % Not use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+    }
+    % Use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+      author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+      if$
+      'this.author :=
+      % format.names 'this.author :=
+      this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {reverse.pass}
+{ next.extra "b" =
+    { "a" 'extra.label := }
+    'skip$
+  if$
+  extra.label empty$ not
+    { cyear extra.label * }
+    { cyear "" * }
+  if$
+  "" field.or.null *
+  'cyear :=
+  extra.label 'next.extra :=
+}
+
+%%% \bysame
+ITERATE {forward.pass}
+
+REVERSE {reverse.pass}
+
+%%% Sorting by sort.key$ (second time)
+EXECUTE {presort.two.mess}
+ITERATE {presort.two}
+SORT
+
+FUNCTION {reset.prev.author}
+{ "xxyyzz" 'prev.author := }
+
+EXECUTE {reset.prev.author}
+
+FUNCTION {forward.pass.two}
+{ bst.use.bysame #1 = 
+    { author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+     if$
+     'this.author :=
+     this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+     if$
+    }
+   'skip$
+  if$
+}
+
+ITERATE {forward.pass.two}
+
+FUNCTION{punctuation}
+{
+  "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" write$ newline$
+  "%  This bbl file is created by " econ.file * " ver." * econ.version *          write$ newline$
+  "%  The latest " econ.file * " is available at " *			write$ newline$
+  "%  <https://github.com/ShiroTakeda/econ-bst>"                        write$ newline$ newline$
+}
+
+EXECUTE {punctuation}
+
+FUNCTION {begin.bib}
+{
+  preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  bst.use.bysame #0 =
+     % Not use \bysame.
+     'skip$
+     % Use \bysame.
+     { "%%% Definition of \bysame" write$ newline$
+       "\ifx\undefined\bysame" write$ newline$
+       "\newcommand{\bysame}{" bst.bysame.definition * "}" *
+       write$ newline$
+       "\fi" write$ newline$ newline$ }
+  if$
+  %% When number index is attached to the beginning of each item.
+  bst.use.number.index #0 =
+     'skip$
+     { bst.number.index.digit "1" =
+         % one digit.
+         { bst.number.index.bibhang.one }
+         { bst.number.index.digit "2" =
+            % two digits.
+            { bst.number.index.bibhang.ten }
+            % three or more digits.
+            { bst.number.index.bibhang.hund }
+           if$
+         }
+       if$
+       'hang :=
+       "%%% Redefinition of \bibhang" write$ newline$
+       "\ifx\undefined\bibhang" write$ newline$
+       "\relax" write$ newline$
+       "\else" write$ newline$
+       "\setlength{\bibhang}{"
+       hang * "}" * write$ newline$ 
+       "\fi" write$ newline$ newline$
+       }
+  if$
+  "\begin{thebibliography}{xxx}" write$ newline$
+
+  %% Initialize the variable `index'.
+  #0 'index :=
+}
+
+FUNCTION {end.bib}
+{ newline$ "\end{thebibliography}" write$ newline$ }
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+EXECUTE {end.bib}
+
+%  --------------------
+%  Local Variables:
+%  fill-column: 78
+%  mode: bst
+%  End:
diff --git a/Master/texmf-dist/bibtex/bst/econ-bst/econ-abbr.bst b/Master/texmf-dist/bibtex/bst/econ-bst/econ-abbr.bst
new file mode 100644
index 00000000000..7beacd5cf64
--- /dev/null
+++ b/Master/texmf-dist/bibtex/bst/econ-bst/econ-abbr.bst
@@ -0,0 +1,4727 @@
+%% econ.bst: BibTeX style file for papers in economics.
+%
+% Author: Shiro Takeda
+% Maintainer: Shiro Takeda
+% Copyright (C) 2001-2018 Shiro Takeda
+% First-written:       <2007/07/28>
+% Version: 2.7
+% Keywords: TeX, BibTeX, bst 
+% URL: https://github.com/ShiroTakeda/econ-bst
+
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% The Current Maintainer of this work is Shiro Takeda.
+
+%% Main features of econ.bst.
+
+% "econ.bst" is a BibTeX style file for economics. It provids the following
+% features:
+
+% 1) The author-year type citation (you need "natbib.sty" as well).
+% 2) Reference style used in economics papers ("econ.bst" is not a BibTeX style
+%    for a specific journal).
+% 3) Highly customizable.  You can easily customize reference style as you wish.
+% 4) You can use "certified random order" proposed by Ray ⓡ Robson (2018)
+%    (http://dx.doi.org/10.1257/aer.20161492).
+
+% Bug reports, requests and suggestions are welcome. 
+
+% For changelogs, see CHANGES.txt file.
+
+% version number
+FUNCTION {econ.version} { "2.7" }
+
+% File name
+FUNCTION {econ.file} { "econ.bst" }
+
+% Debug mode. Non-zero makes debug mode on.
+FUNCTION {econ.debug}
+{ #0 }    % Debug mode off (default).
+% { #1 }    % Debug mode on.
+
+ENTRY
+  %%% Declaration of field
+  { access address author booktitle chapter doi edition editor howpublished
+    institution journal key month note number organization pages publisher
+    school series title type url volume year
+  % Fields specific to econ.bst
+    order absorder nameorder
+  }
+
+  % Definition of entry variable.  The entry variable is a variable which has
+  % different values according to different entries.
+  %% Integer entry variable:
+  { order.cited }
+
+  %% String entry variable
+  { label cyear flabel alabel extra.label sort.label sort.label.abb
+    extra.label.bysame nameorder.temp jname }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Use \bysame or not.
+%
+% If set to #0, \bysame is not used.
+% If set to #1, \bysame is used 
+% If set to #2, \bysame is used (alternative abbreviation style).
+%
+% Note that integer number is expressed as # + integer in bst file.
+% \bysame is the function that abbreviates succession of the same authors' name by ---.
+%
+% See econ-sample.pdf for details.
+% 
+FUNCTION {bst.use.bysame}
+% { #0 }    % Not use \bysame
+{ #1 }    % -> Use \bysame (default)
+% { #2 }    % -> Use \bysame of alternative style.
+
+% The definition of \bysame command.
+%
+FUNCTION {bst.bysame.definition}
+{ "\hskip.3em \leavevmode\rule[.5ex]{3em}{.3pt}\hskip0.5em" } % (default)
+% { "\leavevmode\hbox to\leftmargin{\hrulefill\,\,}" } % If you set #2 to bst.use.bysame, use this.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% The order of fist and last name.
+%
+FUNCTION {bst.author.name}
+{ #0 }    % (default)
+% { #1 }
+% { #2 }
+
+% Case of #0: First author -> last-first, other authors -> first-last. 
+% Fujita, Masahisa, Paul R. Krugman, and Anthony J. Venables. 
+
+% Case of #1: All authors -> last-first
+% Fujita, Masahisa, Krugman, Paul R., and Venables, Anthony J.
+
+% Case of #2: All authors -> first-last
+% Masahisa Fujita, Paul R. Krugman, and Anthony J. Venables.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Abbreviate first name of authors (editors):
+%
+FUNCTION {bst.first.name.initial}
+{ #0 }    % #0 -> full letters (default).
+% { #1 }    % Non-zero -> initial letter only.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Decapitalize of strings in title field.
+%
+FUNCTION {bst.title.lower.case}
+{ #0 }    % If #0, not decapitalize title (default).
+% { #1 }    % If non-#0, decapitalize title
+
+% Hide title filed.
+%
+FUNCTION {bst.hide.title}
+{ #0 }    % #0 -> Title field is displayed (default)
+% { #1 }    % Non-zer -> Title field is hidden 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide month.
+%
+FUNCTION {bst.hide.month}
+{ #0 }    % #0 -> show month field (default).
+% { #1 }    % non-#0 -> hide month field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Attach number index like plain.bst.
+%
+FUNCTION {bst.use.number.index}
+{ #0 }    % Not use number index (default).
+% { #1 }    % Non-#0 -> Use number index
+
+% The string before number index:
+%
+FUNCTION {bst.number.index.pre}
+{ "[" }    % (default)
+
+% The string after number index.  Adjustment is recommended.
+%
+FUNCTION {bst.number.index.post}
+{ "]\hskip1.0em " }    % (default)
+
+% Maximum digit of number index:
+% If the number of reference items >= 100, set 3 to this function.
+% If the number of reference items < 100, set 2 to this function.
+% If the number of reference items < 10, set 1 to this function.
+%
+FUNCTION {bst.number.index.digit}
+{ "2" }    % (default)
+% { "3" }
+
+% The functions below are used to adjust space and postion.  If you use fonts
+% other than computer modern fonts, you had better make adjustments.
+%
+% Setting for bst.number.index.digit = 1:
+FUNCTION {bst.number.index.bibhang.one}
+{ "2.05em" }    % (default)
+% Setting for bst.number.index.digit = 2:
+FUNCTION {bst.number.index.bibhang.ten}
+{ "2.55em" }    % (default)
+% Setting for bst.number.index.digit = 3:
+FUNCTION {bst.number.index.bibhang.hund}
+{ "3.05em" }    % (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Position of "year":
+%
+% You can choose the position of year by this function.
+%
+% If set to #0, year is placed right after "author".
+% If set to non-zero, year is placed at the end (before note field) except for
+% aritcle type entry. 
+%
+% In article type entry, the position of year changes according to the
+% following rule:
+% 
+% #1 -> year is placed at the end.
+% #2 -> year is placed after journal name in aritcle type entry.
+% #3 -> year is placed after volume in aritcle type entry.
+%
+FUNCTION {bst.year.position}
+{ #0 }    % (default).
+% { #1 }    % Last place before note.
+% { #2 }    % After journal name for aticle type entry.
+% { #3 }    % After volume for aticle type entry.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If 0, references are sorted by old documents -> recent documents.  If
+% non-zero, reverse order.
+FUNCTION {bst.reverse.year}
+{ #0 }    % Normal order (old -> recent) (default).
+% { #1 }    % inverse order (recent -> old)
+
+% If non-zero, sort references by using year field as the primary key
+% (chronological sorting).
+FUNCTION {bst.sort.year}
+{ #0 }    % Normal case: year is used as the sorting key next to author (default).
+% { #1 }    % year is used as the primary sorting key.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If non-zero, references are listed in citation order.
+%
+FUNCTION {bst.no.sort}
+{ #0 }    % (default)
+% { #1 }    % listed in citation order.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Non-zero -> sort references by entry type (article, book, incollection etc.)
+%
+FUNCTION {bst.sort.entry.type}
+{ #0 }    % #0 -> Normal (not sort references by entry type) (default).
+% { #1 }    % Non-zero -> sort references by entry type.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use absorder field to sort items.  Otherwise, ignore absorder field.
+%
+FUNCTION {bst.notuse.absorder.field}
+{ #0 }    % #0 -> Use absorder (default).
+% { #1 }    % Non-#0 -> Not use absorder.
+%
+% Order of priority to sort items
+% 
+% absorder -> author -> year -> order -> month -> title
+%
+% wehre absorder and order fields are specific to econ.bst.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use order field to sort items.  Otherwise, ignore order field.
+% Note: order field is specific to econ.bst.
+FUNCTION {bst.notuse.order.field}
+{ #0 }    % #0 -> Use order field (default).
+% { #1 }    % Non-#0 -> not use order field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%     and
+
+%%% String used to separate author names in references.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in references (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.ands}
+{ ", and " }    % (default)
+
+%%% String used to separate author names in citation part.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.cite.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in citation part (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.cite.ands}
+{ " and " }    % (default)
+
+%%% If you want to use random author order for some bibliography entries, set
+% non-zero to this function.
+% 
+FUNCTION {bst.use.nameorder}
+{ #1 }	% Use random order (default)
+% { #0 }	% Not use random order
+
+%%% String used to separate author names in references for the entry of random
+% author order.
+%
+FUNCTION {bst.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+%%% String used to separate author names in citation part for the entry of
+% random author order
+%
+FUNCTION {bst.cite.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Author names in the citation part are abbreviated by et al. if the number of
+% authors is greater or equal to bst.and.others.num.
+FUNCTION {bst.and.others.num}
+{ #3 }    % If the number of authors is greater or equal to three (default).
+
+% If the number of authors is greater or equal to bst.max.author.num, only
+% first author is listed and other authors' names are abbreviated as "et al.".
+FUNCTION {bst.max.author.num}
+{ #12 }    % If the number of authors is greater or equal to 12 (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Strings used when abbreviating multiple-authors in citation part.
+FUNCTION {bst.and.others}
+{ " et~al." }    % (default)
+
+% Strings used when abbreviating multiple-authors in citation part for entries
+% with random author order.
+FUNCTION {bst.and.others.nameorder}
+{ " \textcircled{r}~al." }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       author 
+
+% The string before author:
+%
+FUNCTION {bst.author.pre}
+{ "" }    % (default)
+
+% The string after author:
+%
+FUNCTION {bst.author.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       year
+
+% The string before year only for aritcle type entry.
+%
+FUNCTION {bst.year.pre}
+{ " (" }    % (default)
+
+% The string after year only for aritcle type entry.
+%
+FUNCTION {bst.year.post}
+{ ") " }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.pre}
+{ " (" }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.post}
+{ ") " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       title (except for title in book)
+
+% The string before title:
+%
+FUNCTION {bst.title.pre}
+{ "``" }    % (default)
+
+% The string after title:
+%
+FUNCTION {bst.title.post}
+{ ",''" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       tile for book:
+
+% The string before book title:
+%
+FUNCTION {bst.book.pre}
+{ " \textit{" }    % (default)
+
+% The string after book title:
+%
+FUNCTION {bst.book.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       booktitle
+
+% The string before booktitle:
+%
+FUNCTION {bst.btitle.pre}
+{ " \textit{" }    % (default)
+
+% The string after booktitle:
+%
+FUNCTION {bst.btitle.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       journal name
+
+% The string before journal name:
+%
+FUNCTION {bst.journal.pre}
+{ " \textit{" }    % (default)
+
+% The string after journal name:
+%
+FUNCTION {bst.journal.post}
+{ "}" }    % (default)
+
+% Use the abbreviated journal name
+%
+% If set to #0, do not use abbreviated journal name.
+% If set to non-#0, use abbreviated journal name.
+%
+FUNCTION {bst.journal.name.abb}
+% { #0 }    % (default)
+{ #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       editor notation:
+
+% The string that indicates multiple editors:
+%
+FUNCTION {bst.editors}
+{ " eds. " }    % (default)
+
+% The string that indicates single editor:
+%
+FUNCTION {bst.editor}
+{ " ed. " }    % (default)
+
+% Order of editor and booktitle in incollection and inproceedings entries.
+%
+% If set to #0: 	editors -> booktitle order
+% If set to non-zero:	booktitle -> editors order
+%
+FUNCTION {bst.editor.btitle.order}
+{ #0 }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       edition
+
+% The string before edition:
+%
+FUNCTION {bst.edition.pre}
+{ ", " }    % (default)
+
+% The string after edition:
+%
+FUNCTION {bst.edition.post}
+{ " edition" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       volume
+
+% The string before volume:
+%
+FUNCTION {bst.volume.pre}
+{ ", " }    % (default)
+
+% The string after volume:
+%
+FUNCTION {bst.volume.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       number
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide number.  If non-zero, number is suppressed. 
+FUNCTION {bst.hide.number}
+{ #0 }    % #0 -> show number field (default)
+% { #1 }    % non-#0 -> Hide number field.
+
+% The string before number:
+%
+FUNCTION {bst.number.pre}
+{ " (" }    % (default)
+
+% The string after number:
+%
+FUNCTION {bst.number.post}
+{ ")" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       in 
+
+% In
+%
+FUNCTION {bst.in}
+{ " in " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       page
+
+% The string before page (multiple pages):
+%
+FUNCTION {bst.pages.pre}
+{ ", " }    % (default)
+
+% The string before page:
+%
+FUNCTION {bst.page.pre}
+{ ", " }    % (default)
+
+% The string after page (multiple pages):
+%
+FUNCTION {bst.pages.post}
+{ "" }    % (default)
+
+% The string after page:
+%
+FUNCTION {bst.page.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       chapter
+
+% The string before chapter:
+%
+FUNCTION {bst.chapter.pre}
+{ ", Chap." }    % (default)
+
+% The string after chapter:
+%
+FUNCTION {bst.chapter.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       month
+
+% The string before month:
+%
+FUNCTION {bst.month.pre}
+{ ", " }    % (default)
+
+% The string after month:
+%
+FUNCTION {bst.month.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       address
+% The string before address:
+%
+FUNCTION {bst.address.pre}
+{ ", " }    % (default)
+
+% The string after address:
+%
+FUNCTION {bst.address.post}
+{ "" }    % (default)
+
+% You can choose the order of address and publisher by this function.
+%
+% If #0,	address -> publisher order (the default value).
+% If non-zero,	publisher -> address order.
+
+FUNCTION {bst.address.position}
+{ #0 }    % Address is placed before publisher (default)
+% { #1 }    % Address is placed after publisher 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       publisher
+
+% The string before publisher:
+%
+FUNCTION {bst.publisher.pre}
+{ ": " }    % (default)
+
+% The string after publisher:
+%
+FUNCTION {bst.publisher.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       series
+
+% The string before series:
+%
+FUNCTION {bst.series.pre}
+{ ", " }    % (default)
+
+% The string after series:
+%
+FUNCTION {bst.series.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       organization
+
+% The string before organization:
+%
+FUNCTION {bst.organization.pre}
+{ ", " }    % (default)
+
+% The string after organization:
+%
+FUNCTION {bst.organization.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       school
+
+% The string before school:
+%
+FUNCTION {bst.school.pre}
+{ ", " }    % (default)
+
+% The string after school:
+%
+FUNCTION {bst.school.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       institution
+
+% The string before institution:
+%
+FUNCTION {bst.institution.pre}
+{ ", " }    % (default)
+
+% The string after institution:
+%
+FUNCTION {bst.institution.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       howpublished
+
+% The string before howpublished:
+%
+FUNCTION {bst.howpublished.pre}
+{ " " }    % (default)
+
+% The string after howpublished:
+%
+FUNCTION {bst.howpublished.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       url
+
+% Show or Hide url.  If non-zero, url is displayed. Otherwise, url is suppressed. 
+FUNCTION {bst.show.url}
+{ #1 }    % non-#0 -> Show url field (default)
+% { #0 }    % #0 -> Not show url field.
+
+% The string before url:
+%
+FUNCTION {bst.url.pre}
+{ ", \url{" }	% (default)
+
+% The string after url:
+%
+FUNCTION {bst.url.post}
+{ "}" }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Access
+
+% This setting is valid only if there are "access" field in bib
+% files. The value of access field indicates accessed date for URL.
+
+% The string before access.
+FUNCTION {bst.access.pre}
+{ ", accessed on " } % (default)
+
+% The string after access.
+FUNCTION {bst.access.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       DOI (digital object identifier)
+
+% This setting is valid only if there are "doi" field in bib files.
+
+% Show or Hide DOI.  If non-zero, DOI is displayed. Otherwise, DOI is suppressed. 
+FUNCTION {bst.show.doi}
+{ #1 }    % non-#0 -> Show DOI field (default)
+% { #0 }    % #0 -> Not show DOI field.
+
+% The string before DOI:
+%
+FUNCTION {bst.doi.pre}
+{ ", \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * } % (default)
+
+% The string after DOI:
+%
+FUNCTION {bst.doi.post}
+{ "}}" }	   % (default)
+
+% How to show URL and DOI fields when both fields exist.
+%
+% #0 -> Both fields are displayed
+% #1 -> Only URL field is displayed
+% #2 -> Only DOI field is displayed
+%
+FUNCTION {bst.url.doi}
+% { #0 }    % -> Both fields are displayed
+% { #1 }    % -> Only URL field is displayed
+{ #2 }    % (default) --> Only DOI field is displayed 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Other functions:
+
+% The string before note.
+FUNCTION {bst.note.pre}
+{ ", " }    % (default)
+
+% The string after note.
+FUNCTION {bst.note.post}
+{ "" }    % (default)
+
+% The string that represents Technical report:
+%
+FUNCTION {bst.techrep}
+{ "Technical Report" }    % (default)
+
+% The string that represents master thesis:
+%
+FUNCTION {bst.mthesis}
+{ " Master's thesis" }    % (default)
+
+% The string that represents phd thesis:
+%
+FUNCTION {bst.phdthesis}
+{ " Ph.D. dissertation" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization end here:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FUNCTION {bst.first}
+{ "1st" }
+
+FUNCTION {bst.second}
+{ "2nd" }
+
+FUNCTION {bst.third}
+{ "3rd" }
+
+FUNCTION {bst.fourth}
+{ "4th" }
+
+FUNCTION {bst.fifth}
+{ "5th" }
+
+FUNCTION {bst.st}
+{ "st" }
+
+FUNCTION {bst.nd}
+{ "nd" }
+
+FUNCTION {bst.rd}
+{ "rd" }
+
+FUNCTION {bst.th}
+{ "th" }
+
+%%%%% memo by Takeda
+
+% "a" 'b := indicates substituting string "a" for variable b.
+
+% Integer number #0, #1,...
+
+%%% Function definition:
+%
+% FUNCTION {name}
+% { 's :=
+%
+% }
+%
+% This is the definition of a function named "name".   The function "name" is
+% used in the following way 
+%
+% "foo" name
+% "foo" is an argument for the function "name".
+%
+% About the definition of a function with more than two arguments, see the
+% definition of "chop.word".
+
+%%% Declaration of variables:
+
+%% String global variables:
+STRINGS { s t tt }
+STRINGS { year.num }
+STRINGS { preone preten }
+STRINGS { last.sort.label next.extra prev.author prev.author.aer this.author }
+STRINGS { hang }
+STRINGS { item.type }
+STRINGS { tempa tempb }
+
+%% Integer global variables:
+INTEGERS { nameptr namesleft numnames name.num }
+INTEGERS { multiresult }
+INTEGERS { index }
+INTEGERS { len }
+INTEGERS { last.extra.num }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+INTEGERS { last.period.comma }
+INTEGERS { len1.aer len2.aer i.aer }
+
+%%% Definition of functions:
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+
+%%% Initialize variables:
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+
+%%% Remove comma and add period:
+%
+%%%
+FUNCTION {add.period.x}
+{ duplicate$
+  #-1 #1 substring$ "," =
+    { #-2 global.max$ substring$ "." * }
+    { duplicate$
+      #-1 #2 substring$ ". " =
+        { #-3 global.max$ substring$ "." * }
+        { duplicate$
+          #-1 #2 substring$ ", " =
+            { #-3 global.max$ substring$ "." * }
+            { duplicate$
+              #-1 #2 substring$ ",'" =
+                { #-3 global.max$ substring$ ".'" * }
+                { duplicate$
+                  #-1 #2 substring$ ".'" =
+                    { #-3 global.max$ substring$ ".'" * }
+                    { duplicate$
+                      #-1 #2 substring$ ".~" =
+                        { #-3 global.max$ substring$ ".~" * }
+                        { duplicate$
+                          #-1 #2 substring$ ",~" =
+                            { #-3 global.max$ substring$ ".~" * }
+                            { duplicate$
+                              #-1 #3 substring$ ",''" =
+                                { #-4 global.max$ substring$ ".''" * }
+                                { duplicate$
+                                  #-1 #3 substring$ ".''" =
+                                    { #-4 global.max$ substring$ ".''" * }
+                                    { add.period$ }
+                                  if$
+                                }
+                              if$
+                            }
+                          if$
+                        }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {output.nonnull}
+{ 's :=
+  % mid.sentence
+  output.state mid.sentence =
+    { ", " * write$ }
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period.x " " * write$ }
+          if$
+        }
+      if$
+      % not mid.sentence, set to mid.sentence
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+
+%%% If the last character is period or comma, set non-zero to
+%%% last.period.comma.
+FUNCTION {period.comma.p}
+{ duplicate$ 't :=
+  t #-1 #1 substring$ "." = 
+  t #-1 #1 substring$ "," = or
+  t #-1 #1 substring$ ":" = or 
+  t #-1 #2 substring$ ".'" = or
+  t #-1 #2 substring$ ",'" = or
+  t #-1 #3 substring$ ".''" = or
+  t #-1 #3 substring$ ",''" = or
+  t #-1 #2 substring$ ".~" = or
+  t #-1 #2 substring$ ",~" = or
+    { #1 'last.period.comma := }
+    { #0 'last.period.comma := }
+  if$
+}
+
+%%% remove unnecessary comma.
+FUNCTION {remove.pre.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #1 #1 substring$ "," = 
+       { s #2 global.max$ substring$ }
+       { s #1 #1 substring$ "." = 
+          { s #2 global.max$ substring$ }
+          's
+         if$
+       }
+      if$
+    }
+  if$
+}
+
+%%% output.nonnull.nocomma is the same as output.nonnull except that it does
+%%% not add commas even in mid.sentence.
+FUNCTION {output.nonnull.nocomma}
+{ 's :=
+  output.state mid.sentence =
+    % mid.sentence
+    { period.comma.p "" * write$ }
+
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  last.period.comma #0 =
+    { s }
+    { s remove.pre.comma }
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output}
+% { duplicate$ empty$
+%     'pop$
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.nocomma}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull.nocomma
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output.check}
+% { 't :=
+%   duplicate$ empty$
+%     { pop$ "empty " t * " in " * cite$ * warning$ }
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.check.nocomma}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull.nocomma
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Format in bbl file:
+
+% \harvarditem[Brezis et~al.]{Brezis, Krugman and
+%   Tsiddon}{1993}{brezis93:_leapf_inter_compet}
+% Brezis, Elise~S., Paul~R. Krugman, and Daniel Tsiddon  (1993) ``Leapfrogging in
+%   International Competition: A Theory of Cycles in National Technological
+%   Leadership.'', {\em American Economic Review.}, Vol.~83. No.~5. pp.
+%   1211--1219.
+
+% \harvarditem[abbreviated citation]{full citation}{year}{keyword} ...
+
+%%% Add period and newline.
+FUNCTION {fin.entry}
+{ add.period.x
+  write$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+
+FUNCTION {new.block.check}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+
+%%% booktitle
+FUNCTION {format.btitle}
+{ booktitle empty$
+    { "" }
+    { bst.btitle.pre booktitle * bst.btitle.post * }
+  if$
+}
+
+FUNCTION {journal.name.sub}
+{ 't :=
+  t #1 #4 substring$ "The " =
+    % Use #30 to handle with the long journal name.
+    { t #5 #30 substring$ 't := }
+    'skip$
+  if$
+  t
+}
+
+FUNCTION {format.journal.name.abb}
+{ journal 's :=
+  journal 'jname :=
+  s journal.name.sub 's :=
+  bst.journal.name.abb #0 =
+    'skip$
+    { 
+       s "Academic Management Review" =
+        { "Acad. Manage. J." 'jname := }
+        'skip$
+      if$
+      s "Academy of Management Journal" =
+        { "Acad. Manage. Rev." 'jname := }
+        'skip$
+      if$
+      s "Accounting Review" =
+        { "Account. Rev." 'jname := }
+        'skip$
+      if$
+      s "Accounting, Organizations and Society" =
+        { "Account. Org. Soc." 'jname := }
+        'skip$
+      if$
+      s "Accounting, Organizations and Society" =
+        { "Admin. Sci. Quart." 'jname := }
+        'skip$
+      if$
+      s "Administrative Science Quarterly" =
+        { "Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Applied Economics" =
+        { "Am. Econ. J. Appl. Econ." 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Economic Policy" =
+        { "Am. Econ. J. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Macroeconomics" =
+        { "Am. Econ. J. Macro." 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Microeconomics" =
+        { "Am. Econ. J. Micro." 'jname := }
+        'skip$
+      if$
+      s "American Economic Review" =
+        { "Am. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "American Journal of Agricultural Economics" =
+        { "Am. J. Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "American Journal of Economics and Sociology" =
+        { "Am. J. Econ. Sociol." 'jname := }
+        'skip$
+      if$
+      s "Applied Economics" =
+        { "Appl. Econ." 'jname := }
+        'skip$
+      if$
+      s "Applied Economics Letters" =
+        { "Appl. Econ. Lett." 'jname := }
+        'skip$
+      if$
+      s "Applied Energy" =
+        { "Appl. Energ." 'jname := }
+        'skip$
+      if$
+      s "Applied Stochastic Models in Business and Industry" =
+        { "Appl. Stoch. Model Bus." 'jname := }
+        'skip$
+      if$
+      s "Auditing: A Journal of Practise and Theory" =
+        { "Auditing.-J. Pract. Th." 'jname := }
+        'skip$
+      if$
+      s "Australian Journal of Agricultural and Resource Economics" =
+        { "Aust. J. Agr. Resour. Ec." 'jname := }
+        'skip$
+      if$
+      s "B.E. Journal of Economic Analysis \& Policy" =
+        { "B.E. J. Econ. Anal. Policy" 'jname := }
+        'skip$
+      if$
+      s "Betriebswirtschaftliche Forschung Und Praxis" =
+        { "Betrieb. Forsch. Prax." 'jname := }
+        'skip$
+      if$
+      s "British Journal of Industrial Relations" =
+        { "Brit. J. Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "British Journal of Management" =
+        { "Brit. J. Manage." 'jname := }
+        'skip$
+      if$
+      s "Bulletin of Indonesian Economic Studies" =
+        { "B. Indones. Econ. Stud." 'jname := }
+        'skip$
+      if$
+      s "Business Ethics Quarterly" =
+        { "Bus. Ethics Q." 'jname := }
+        'skip$
+      if$
+      s "Business History" =
+        { "Bus. Hist." 'jname := }
+        'skip$
+      if$
+      s "Business History Review" =
+        { "Bus. Hist. Rev." 'jname := }
+        'skip$
+      if$
+      s "Business Lawyer" =
+        { "Bus. Lawyer" 'jname := }
+        'skip$
+      if$
+      s "California Management Review" =
+        { "Calif. Manage. Rev." 'jname := }
+        'skip$
+      if$
+      s "Cambridge Journal of Economics" =
+        { "Cambridge J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Canadian Journal of Administrative Sciences" =
+        { "Can. J. Adm. Sci." 'jname := }
+        'skip$
+      if$
+      s "Canadian Journal of Economics" =
+        { "Can. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "China Economic Review" =
+        { "China. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "Climate Change Economics" =
+        { "Clim. Change Econ." 'jname := }
+        'skip$
+      if$
+      s "Climate Policy" =
+        { "Clim. Policy" 'jname := }
+        'skip$
+      if$
+      s "Communications in Statistics – Part A: Theory and Methods" =
+        { "Commun. Stat.-Theor. M." 'jname := }
+        'skip$
+      if$
+      s "Computational Economics" =
+        { "Computation. Econ." 'jname := }
+        'skip$
+      if$
+      s "Computational Statistics" =
+        { "Computation. Stat." 'jname := }
+        'skip$
+      if$
+      s "Computational Statistics and Data Analysis" =
+        { "Comput. Stat. Data An." 'jname := }
+        'skip$
+      if$
+      s "Contemporary Accounting Research" =
+        { "Contemp. Account. Res." 'jname := }
+        'skip$
+      if$
+      s "Contemporary Economic Policy" =
+        { "Contemp. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Defence and Peace Economics" =
+        { "Defence Peace Econ." 'jname := }
+        'skip$
+      if$
+      s "Development Economics" =
+        { "Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Eastern European Economics" =
+        { "Eastern Eur. Econ." 'jname := }
+        'skip$
+      if$
+      s "Ecological Economics" =
+        { "Ecol. Econ." 'jname := }
+        'skip$
+      if$
+      s "Econometric Theory" =
+        { "Economet. Theor." 'jname := }
+        'skip$
+      if$
+      s "Econometrica" =
+        { "Econometrica" 'jname := }
+        'skip$
+      if$
+      s "Economic and Industrial Democracy" =
+        { "Econ. Ind. Democr." 'jname := }
+        'skip$
+      if$
+      s "Economic Development and Cultural Change" =
+        { "Econ. Dev. Cult. Change" 'jname := }
+        'skip$
+      if$
+      s "Economic Development and Cultural Change" =
+        { "Economist.-Netherland" 'jname := }
+        'skip$
+      if$
+      s "Economic Development Quarterly" =
+        { "Econ. Dev. Q." 'jname := }
+        'skip$
+      if$
+      s "Economic Geography" =
+        { "Econ. Geogr." 'jname := }
+        'skip$
+      if$
+      s "Economic History Review" =
+        { "Econ. Hist. Rev." 'jname := }
+        'skip$
+      if$
+      s "Economic Inquiry" =
+        { "Econ. Inq." 'jname := }
+        'skip$
+      if$
+      s "Economic Journal" =
+        { "Econ. J." 'jname := }
+        'skip$
+      if$
+      s "Economic Modelling" =
+        { "Econ. Model." 'jname := }
+        'skip$
+      if$
+      s "Economic Policy" =
+        { "Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Economic Record" =
+        { "Econ. Rec." 'jname := }
+        'skip$
+      if$
+      s "Economic Theory" =
+        { "Econ. Theor." 'jname := }
+        'skip$
+      if$
+      s "Economica" =
+        { "Economica" 'jname := }
+        'skip$
+      if$
+      s "Economics and Philosophy" =
+        { "Econ. Philos." 'jname := }
+        'skip$
+      if$
+      s "Economics Letters" =
+        { "Econ. Lett." 'jname := }
+        'skip$
+      if$
+      s "Economics of Education Review" =
+        { "Econ. Educ. Rev." 'jname := }
+        'skip$
+      if$
+      s "Economics of Energy \& Environmental Policy" =
+        { "Econ. Energ. Environ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Economics of Transition" =
+        { "Econ. Transit." 'jname := }
+        'skip$
+      if$
+      s "Economy and Society" =
+        { "Econ. Soc." 'jname := }
+        'skip$
+      if$
+      s "Ekonomicky Casopis" =
+        { "Ekon. Cas." 'jname := }
+        'skip$
+      if$
+      s "Ekonomiska Samfundets Tidskrift" =
+        { "Ekon. Samf. Tidskr." 'jname := }
+        'skip$
+      if$
+      s "Emerging Markets Finance and Trade" =
+        { "Emerg. Mark. Financ. Tr." 'jname := }
+        'skip$
+      if$
+      s "Energy Economics" =
+        { "Energ. Econ." 'jname := }
+        'skip$
+      if$
+      s "Energy Journal" =
+        { "Energ. J." 'jname := }
+        'skip$
+      if$
+      s "Energy Policy" =
+        { "Energ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Entrepreneurship \& Regional Development" =
+        { "Entrep. Region. Dev." 'jname := }
+        'skip$
+      if$
+      s "Entrepreneurship Theory and Practice" =
+        { "Entrep. Theory Pract." 'jname := }
+        'skip$
+      if$
+      s "Environment and Development Economics" =
+        { "Environ. Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Environmental and Resource Economics" =
+        { "Environ. Resour. Econ." 'jname := }
+        'skip$
+      if$
+      s "Environmental Economics and Policy Studies" =
+        { "Environ. Econ. Policy Stud." 'jname := }
+        'skip$
+      if$
+      s "Environmental Science and Policy" =
+        { "Environ. Sci. Policy" 'jname := }
+        'skip$
+      if$
+      s "Environmental Science \& Technology" =
+        { "Environ. Sci. Technol." 'jname := }
+        'skip$
+      if$
+      s "Eurasian Geography and Economics " =
+        { "Eurasian Geogr. Econ." 'jname := }
+        'skip$
+      if$
+      s "European Economic Review" =
+        { "Eur. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "European Journal of Industrial Relations" =
+        { "Eur. J. Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "European Review of Agricultural Economics" =
+        { "Eur. Rev. Agric. Econ." 'jname := }
+        'skip$
+      if$
+      s "Europe-Asia Studies" =
+        { "Europe-Asia Stud." 'jname := }
+        'skip$
+      if$
+      s "Explorations in Economic History" =
+        { "Explor. Econ. Hist." 'jname := }
+        'skip$
+      if$
+      s "Feminist Economics" =
+        { "Fem. Econ." 'jname := }
+        'skip$
+      if$
+      s "Finance a Uver" =
+        { "Financ. Uver." 'jname := }
+        'skip$
+      if$
+      s "Finance and Stochastics" =
+        { "Financ. Stoch." 'jname := }
+        'skip$
+      if$
+      s "Financial Analysts Journal" =
+        { "Financ. Anal. J." 'jname := }
+        'skip$
+      if$
+      s "Financial Management" =
+        { "Financ. Manage." 'jname := }
+        'skip$
+      if$
+      s "Fiscal Studies" =
+        { "Fisc. Stud." 'jname := }
+        'skip$
+      if$
+      s "Food Policy" =
+        { "Food. Policy." 'jname := }
+        'skip$
+      if$
+      s "Futures" =
+        { "Futures" 'jname := }
+        'skip$
+      if$
+      s "Games and Economic Behavior" =
+        { "Game Econ. Behav." 'jname := }
+        'skip$
+      if$
+      s "Health Economics" =
+        { "Health Econ." 'jname := }
+        'skip$
+      if$
+      s "Hitotsubashi Journal of Economics" =
+        { "Hitotsub. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "IMF Staff Papers" =
+        { "Imf. Staff. Papers" 'jname := }
+        'skip$
+      if$
+      s "Industrial and Corporate Change" =
+        { "Ind. Corp. Change" 'jname := }
+        'skip$
+      if$
+      s "Industrial and Labor Relations Review" =
+        { "Ind. Labor. Relat. Rev." 'jname := }
+        'skip$
+      if$
+      s "Industrial Marketing Management" =
+        { "Ind. Market Manag." 'jname := }
+        'skip$
+      if$
+      s "Industrial Relations" =
+        { "Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "Information Economics and Policy" =
+        { "Info. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Insurance: Mathematics and Economics" =
+        { "Insur. Math. Econ." 'jname := }
+        'skip$
+      if$
+      s "International Economic Review" =
+        { "Int. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Electronics and Telecommunications" =
+        { "Int. J. Electron. Comm." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Economic Theory" =
+        { "Int. J. Econ. Theory" 'jname := }
+        'skip$
+      if$
+      s "International Journal of Finance \& Economics" =
+        { "Int. J. Financ. Econ." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Forecasting" =
+        { "Int. J. Forecast." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Game Theory" =
+        { "Int. J. Game. Theory" 'jname := }
+        'skip$
+      if$
+      s "International Journal of Industrial Organization" =
+        { "Int. J. Ind. Organ." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Manpower" =
+        { "Int. J. Manpow." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Market Research" =
+        { "Int. J. Market Res." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Research in Marketing" =
+        { "Int. J. Res. Mark." 'jname := }
+        'skip$
+      if$
+      s "International Labour Review" =
+        { "Int. Labour Rev." 'jname := }
+        'skip$
+      if$
+      s "International Marketing Review" =
+        { "Int. Market. Rev." 'jname := }
+        'skip$
+      if$
+      s "International Review of Applied Economics" =
+        { "Int. Rev. Appl. Econ." 'jname := }
+        'skip$
+      if$
+      s "International Review of Law and Economics" =
+        { "Int. Rev. Law Econ." 'jname := }
+        'skip$
+      if$
+      s "International Small Business Journal" =
+        { "Int. Small. Bus. J." 'jname := }
+        'skip$
+      if$
+      s "International Tax and Public Finance" =
+        { "Int. Tax Public Finan." 'jname := }
+        'skip$
+      if$
+      s "Jahrbücher für Nationalökonomie und Statistik" =
+        { "Jahrb. Natl. Stat." 'jname := }
+        'skip$
+      if$
+      s "Japan and the World Economy" =
+        { "Jpn. World Econ." 'jname := }
+        'skip$
+      if$
+      s "Japanese Economic Review" =
+        { "Jpn. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "JCMS-journal of Common Market Studies" =
+        { "Jcms.-J. Common. Mark. S." 'jname := }
+        'skip$
+      if$
+      s "Journal of Accounting and Economics" =
+        { "J. Account. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Accounting Research" =
+        { "J. Account. Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Advertising" =
+        { "J. Advertising" 'jname := }
+        'skip$
+      if$
+      s "Journal of Advertising Research" =
+        { "J. Advertising Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of African Economies" =
+        { "J. Afr. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Agricultural and Resource Economics" =
+        { "J. Agr. Resour. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Agricultural Economics" =
+        { "J. Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Applied Econometrics" =
+        { "J. Appl. Econom." 'jname := }
+        'skip$
+      if$
+      s "Journal of Banking and Finance" =
+        { "J. Bank Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business" =
+        { "J. Bus." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business and Economic Statistics" =
+        { "J. Bus. Econ. Stat." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business and Psychology" =
+        { "J. Bus. Psychol." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business and Technical Communication" =
+        { "J. Bus. Tech. Commun." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business Ethics" =
+        { "J. Bus. Ethics" 'jname := }
+        'skip$
+      if$
+      s "Journal of Business Research" =
+        { "J. Bus. Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business Venturing" =
+        { "J. Bus. Venturing." 'jname := }
+        'skip$
+      if$
+      s "Journal of Cleaner Productiond" =
+        { "J. Clean. Prod." 'jname := }
+        'skip$
+      if$
+      s "Journal of Comparative Economics" =
+        { "J. Comp. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Consumer Affairs" =
+        { "J. Consum. Aff." 'jname := }
+        'skip$
+      if$
+      s "Journal of Consumer Research" =
+        { "J. Consum. Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Corporate Finance" =
+        { "J. Corp. Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Development Economics" =
+        { "J. Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Econometrics" =
+        { "J. Econometrics" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Behavior and Organization" =
+        { "J. Econ. Behav. Organ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Dynamics and Control" =
+        { "J. Econ. Dyn. Control" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Education" =
+        { "J. Econ. Educ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Geography" =
+        { "J. Econ. Geogr." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Growth" =
+        { "J. Econ. Growth" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic History" =
+        { "J. Econ. Hist." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Integration" =
+        { "J. Econ. Integr." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Issues" =
+        { "J. Econ. Issues." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Perspectives" =
+        { "J. Econ. Perspect." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Psychology" =
+        { "J. Econ. Psychol." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Literature" =
+        { "J. Econ. Lit." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Surveys" =
+        { "J. Econ. Surv." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Theory" =
+        { "J. Econ. Theory" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economics" =
+        { "J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economics and Management Strategy" =
+        { "J. Econ. Manage. Strat." 'jname := }
+        'skip$
+      if$
+      s "Journal of Environmental Economics and Management" =
+        { "J. Environ. Econ. Manag." 'jname := }
+        'skip$
+      if$
+      s "Journal of Evolutionary Economics" =
+        { "J. Evol. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Finance" =
+        { "J. Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial and Quantitative Analysis" =
+        { "J. Financ. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial Economics" =
+        { "J. Financ. Intermed." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial Intermediation" =
+        { "J. Financ. Mark." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial Markets" =
+        { "J. Financ. Quant. Anal." 'jname := }
+        'skip$
+      if$
+      s "Journal of Forecasting" =
+        { "J. Forecasting." 'jname := }
+        'skip$
+      if$
+      s "Journal of Futures Markets" =
+        { "J. Futures Market" 'jname := }
+        'skip$
+      if$
+      s "Journal of Health Economics" =
+        { "J. Health Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Housing Economics" =
+        { "J. Hous. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Human Resources" =
+        { "J. Hum. Resour." 'jname := }
+        'skip$
+      if$
+      s "Journal of Industrial Economics" =
+        { "J. Ind. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Institutional and Theoretical Economics" =
+        { "J. Inst. Theor. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Integrated Disaster Risk Management" =
+        { "J. Integr. Disaster Risk Manag." 'jname := }
+        'skip$
+      if$
+      s "Journal of International Business Studies" =
+        { "J. Int. Bus. Stud." 'jname := }
+        'skip$
+      if$
+      s "Journal of International Economics" =
+        { "J. Int. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of International Marketing" =
+        { "J. Int. Marketing" 'jname := }
+        'skip$
+      if$
+      s "Journal of International Money and Finance" =
+        { "J. Int. Money Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Labor Economics" =
+        { "J. Labor Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Labor Research" =
+        { "J. Labor Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Law and Economics" =
+        { "J. Law. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Law, Economics, and Organization" =
+        { "J. Law. Econ. Organ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Macroeconomics" =
+        { "J. Macroecon." 'jname := }
+        'skip$
+      if$
+      s "Journal of Management" =
+        { "J. Manage." 'jname := }
+        'skip$
+      if$
+      s "Journal of Management Studies" =
+        { "J. Manage. Stud." 'jname := }
+        'skip$
+      if$
+      s "Journal of Marketing" =
+        { "J. Marketing" 'jname := }
+        'skip$
+      if$
+      s "Journal of Marketing Research" =
+        { "J. Marketing Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Mathematical Economics" =
+        { "J. Math. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Media Economics" =
+        { "J. Media Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Monetary Economics" =
+        { "J. Monetary. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Money, Credit and Banking" =
+        { "J. Money Credit Bank." 'jname := }
+        'skip$
+      if$
+      s "Journal of Policy Modeling" =
+        { "J. Policy Model." 'jname := }
+        'skip$
+      if$
+      s "Journal of Political Economy" =
+        { "J. Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Population Economics" =
+        { "J. Popul. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Portfolio Management" =
+        { "J. Portfolio Manage." 'jname := }
+        'skip$
+      if$
+      s "Journal of Post Keynesian Economics" =
+        { "J. Post Keynesian Ec." 'jname := }
+        'skip$
+      if$
+      s "Journal of Product Innovation Management" =
+        { "J. Prod. Innovat. Manag." 'jname := }
+        'skip$
+      if$
+      s "Journal of Productivity Analysis" =
+        { "J. Prod. Anal." 'jname := }
+        'skip$
+      if$
+      s "Journal of Public Economics" =
+        { "J. Public Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Public Policy and Marketing" =
+        { "J. Public Policy Mark." 'jname := }
+        'skip$
+      if$
+      s "Journal of Real Estate Finance and Economics" =
+        { "J. Real Estate Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Regulatory Economics" =
+        { "J. Regul. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Retailing" =
+        { "J. Retailing" 'jname := }
+        'skip$
+      if$
+      s "Journal of Risk and Insurance" =
+        { "J. Risk. Insur" 'jname := }
+        'skip$
+      if$
+      s "Journal of Risk and Uncertainty" =
+        { "J. Risk Uncertainty" 'jname := }
+        'skip$
+      if$
+      s "Journal of Statistical Computation and Simulation" =
+        { "J. Stat. Comput. Sim." 'jname := }
+        'skip$
+      if$
+      s "Journal of Statistical Planning and Inference" =
+        { "J. Stat. Plan. Infer." 'jname := }
+        'skip$
+      if$
+      s "Journal of the Academy of Marketing Science" =
+        { "J. Acad. Market. Sci." 'jname := }
+        'skip$
+      if$
+      s "Journal of the American Statistical Association" =
+        { "J. Am. Stat. Assoc." 'jname := }
+        'skip$
+      if$
+      s "Journal of the European Economic Association" =
+        { "J. Eur. Econ. Assoc." 'jname := }
+        'skip$
+      if$
+      s "Journal of the Japanese and International Economies" =
+        { "J. Jpn. Int. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Time Series Analysis" =
+        { "J. Time Ser. Anal." 'jname := }
+        'skip$
+      if$
+      s "Journal of Transport Economics and Policy" =
+        { "J. Transp. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Journal of Urban Economics" =
+        { "J. Urban Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of World Business" =
+        { "J. World. Bus." 'jname := }
+        'skip$
+      if$
+      s "Kyklos" =
+        { "Kyklos" 'jname := }
+        'skip$
+      if$
+      s "Labor History" =
+        { "Labor Hist." 'jname := }
+        'skip$
+      if$
+      s "Labour Economics" =
+        { "Labour Econ." 'jname := }
+        'skip$
+      if$
+      s "Land Economics" =
+        { "Land Econ." 'jname := }
+        'skip$
+      if$
+      s "Long Range Planning" =
+        { "Long Range Plann." 'jname := }
+        'skip$
+      if$
+      s "Macroeconomic Dynamics" =
+        { "Macroecon. Dyn." 'jname := }
+        'skip$
+      if$
+      s "Management Science" =
+        { "Manage. Sci." 'jname := }
+        'skip$
+      if$
+      s "Manchester School" =
+        { "Manch. Sch." 'jname := }
+        'skip$
+      if$
+      s "Marketing Letters" =
+        { "Market. Lett." 'jname := }
+        'skip$
+      if$
+      s "Marketing Science" =
+        { "Market. Sci." 'jname := }
+        'skip$
+      if$
+      s "Materials Transactions" =
+        { "Mater. Trans." 'jname := }
+        'skip$
+      if$
+      s "Mathematical Finance" =
+        { "Math. Financ." 'jname := }
+        'skip$
+      if$
+      s "Monthly Labor Review" =
+        { "Mon. Labor Rev." 'jname := }
+        'skip$
+      if$
+      s "National Tax Journal" =
+        { "Natl. Tax. J." 'jname := }
+        'skip$
+      if$
+      s "New England Economic Review" =
+        { "New Engl. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "New Political Economy" =
+        { "New Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Open Economies Review" =
+        { "Open. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "Organizational Dynamics" =
+        { "Organ. Dyn." 'jname := }
+        'skip$
+      if$
+      s "Oxford Bulletin of Economics and Statistics" =
+        { "Oxford. B. Econ. Stat." 'jname := }
+        'skip$
+      if$
+      s "Oxford Economic Papers" =
+        { "Oxford Econ. Pap." 'jname := }
+        'skip$
+      if$
+      s "Oxford Review of Economic Policy" =
+        { "Oxford. Rev. Econ. Pol." 'jname := }
+        'skip$
+      if$
+      s "Politicka Ekonomie" =
+        { "Polit. Ekon." 'jname := }
+        'skip$
+      if$
+      s "Population and Development Review" =
+        { "Popul. Dev. Rev." 'jname := }
+        'skip$
+      if$
+      s "Post-Communist Economies" =
+        { "Post.-Communist. Econ." 'jname := }
+        'skip$
+      if$
+      s "Post-Soviet Affairs" =
+        { "Post.-Sov. Aff." 'jname := }
+        'skip$
+      if$
+      s "Psychology \& Marketing" =
+        { "Psychol. Market." 'jname := }
+        'skip$
+      if$
+      s "Public Choice" =
+        { "Public. Choice." 'jname := }
+        'skip$
+      if$
+      s "Quantitative Finance" =
+        { "Quant. Financ." 'jname := }
+        'skip$
+      if$
+      s "Quarterly Journal of Economics" =
+        { "Q. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "R\&D Management" =
+        { "R.\&D. Manage." 'jname := }
+        'skip$
+      if$
+      s "RAND Journal of Economics" =
+        { "Rand. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Real Estate Economics" =
+        { "Real Estate Econ." 'jname := }
+        'skip$
+      if$
+      s "Regional Science and Urban Economics" =
+        { "Reg. Sci. Urban. Econ." 'jname := }
+        'skip$
+      if$
+      s "Regional Studies" =
+        { "Reg. Stud." 'jname := }
+        'skip$
+      if$
+      s "Relations Industrielles-Industrial Relations" =
+        { "Relat. Ind.-Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "Research-Technology Management" =
+        { "Res. Technol. Manage." 'jname := }
+        'skip$
+      if$
+      s "Resource and Energy Economics" =
+        { "Resour. Energy. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of Accounting Studies" =
+        { "Rev. Acc. Stud." 'jname := }
+        'skip$
+      if$
+      s "Review of Agricultural Economics" =
+        { "Rev. Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of Development Economics" =
+        { "Rev. Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of Economic Dynamics" =
+        { "Rev. Econ. Dynam." 'jname := }
+        'skip$
+      if$
+      s "Review of Economic Studies" =
+        { "Rev. Econ. Stat." 'jname := }
+        'skip$
+      if$
+      s "Review of Economics and Statistics" =
+        { "Rev. Econ. Stud." 'jname := }
+        'skip$
+      if$
+      s "Review of Financial Studies" =
+        { "Rev. Financ. Stud." 'jname := }
+        'skip$
+      if$
+      s "Review of Income and Wealth" =
+        { "Rev. Income Wealth" 'jname := }
+        'skip$
+      if$
+      s "Review of Industrial Organization" =
+        { "Rev. Ind. Organ." 'jname := }
+        'skip$
+      if$
+      s "Review of International Economics" =
+        { "Rev. Int. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of International Political Economy" =
+        { "Rev. Int. Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of World Economics" =
+        { "Rev. World Econ." 'jname := }
+        'skip$
+      if$
+      s "Scandinavian Journal of Economics" =
+        { "Scand. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Scottish Journal of Political Economy" =
+        { "Scot. J. Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Small Business Economics" =
+        { "Small. Bus. Econ." 'jname := }
+        'skip$
+      if$
+      s "Social Choice and Welfare" =
+        { "Soc. Choice Welfare" 'jname := }
+        'skip$
+      if$
+      s "South African Journal of Economics" =
+        { "S. Afr. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Southern Economic Journal" =
+        { "South. Econ. J." 'jname := }
+        'skip$
+      if$
+      s "Strategic Management Journal" =
+        { "Statistics." 'jname := }
+        'skip$
+      if$
+      s "Strategic Management Journal" =
+        { "Strategic Manage. J." 'jname := }
+        'skip$
+      if$
+      s "Studies in Nonlinear Dynamics and Econometrics" =
+        { "Stoch. Anal. Appl." 'jname := }
+        'skip$
+      if$
+      s "Studies in Nonlinear Dynamics and Econometrics" =
+        { "Stud. Nonlinear. Dyn. E." 'jname := }
+        'skip$
+      if$
+      s "Supply Chain Management" =
+        { "Supply. Chain. Manag." 'jname := }
+        'skip$
+      if$
+      s "Sustainability" =
+        { "Sustainability" 'jname := }
+        'skip$
+      if$
+      s "Technological Forecasting and Social Change" =
+        { "Technol. Forecast. Soc." 'jname := }
+        'skip$
+      if$
+      s "Theory and Decision" =
+        { "Theor. Decis." 'jname := }
+        'skip$
+      if$
+      s "Tijdschrift voor Economische en Sociale Geografie" =
+        { "Tijdschr. Econ. Soc. Ge." 'jname := }
+        'skip$
+      if$
+      s "Trimestre Economico" =
+        { "Trimest. Econ." 'jname := }
+        'skip$
+      if$
+      s "Work and Occupations" =
+        { "Work Occupation." 'jname := }
+        'skip$
+      if$
+      s "Work, Employment and Society" =
+        { "Work Employ. Soc." 'jname := }
+        'skip$
+      if$
+      s "World Bank Economic Review" =
+        { "World Bank Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "World Bank Research Observer" =
+        { "World Bank Res. Obser." 'jname := }
+        'skip$
+      if$
+      s "World Development" =
+        { "World Dev." 'jname := }
+        'skip$
+      if$
+      s "World Economy" =
+        { "World Econ." 'jname := }
+        'skip$
+      if$
+    }
+  if$
+  jname
+}
+
+%%% journal
+FUNCTION {format.journal}
+{ journal empty$
+    { "" }
+    { bst.journal.pre format.journal.name.abb * bst.journal.post * }
+  if$
+}
+
+%%% title for book
+FUNCTION {format.book}
+{ title empty$
+    { "" }
+    { bst.book.pre title * bst.book.post * }
+  if$
+}
+
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+    { type$ "online" = bst.show.url or
+        { bst.url.pre url * bst.url.post *
+          access empty$
+             { "" * }
+             { bst.access.pre * access * bst.access.post * }
+          if$
+        }
+        { "" }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.doi}
+{ doi empty$ bst.show.doi not or
+    { "" }
+    { bst.doi.pre doi * bst.doi.post * }
+  if$
+}
+
+FUNCTION {format.url.doi}
+{ url empty$
+    { format.doi }
+    { doi empty$
+        { format.url }
+        { bst.url.doi #0 =
+            { format.url output.nocomma
+              format.doi }
+            { bst.url.doi #1 =
+                { format.url } 
+                { format.doi }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% and others
+FUNCTION {bst.and.others.output}
+{ nameorder.temp "random" =
+  bst.use.nameorder #0 = not and
+    { bst.and.others.nameorder }
+    { bst.and.others }
+  if$
+}
+
+%%% author and editor
+
+%%% name
+FUNCTION {format.names}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+
+  { nameptr #1 =
+      % First author
+      { bst.author.name #0 =
+        bst.author.name #1 =
+        or
+           { bst.first.name.initial #0 = 
+            { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+            { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+           if$
+         }
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+           if$
+         }
+        if$
+      }
+      % The second or later authors
+      { bst.author.name #0 =
+        bst.author.name #2 =
+        or
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+             if$
+           }
+           { bst.first.name.initial #0 = 
+                { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+                { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+             if$
+           }
+        if$
+      }
+    if$
+    
+    nameptr #1 >
+      % The second or later authors
+      { numnames bst.max.author.num >
+          { bst.and.others * 
+            #1 'namesleft :=  }
+          { nameorder.temp "random" =
+            bst.use.nameorder #0 = not and
+              { bst.and.nameorder * t * }
+              { namesleft #1 >
+                  % More than one authors left
+                  { ", " * t * }
+                  % Only one author left
+                  { t "others" =
+                      { bst.and.others.output * }
+                      { numnames #2 =
+                          % Entry with two authors
+                          { bst.and * t * }
+                          { bst.ands * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% remove successive periods (commas) from author
+FUNCTION {remove.ss.period.auth}
+{ 's :=
+  s format.names 'tempa :=
+  bst.author.post 'tempb :=
+  tempb #1 #1 substring$ "}" =
+    { tempa tempb * }
+    { tempa #-1 #1 substring$ tempb #1 #1 substring$ = 
+        { tempa tempb #2 global.max$ substring$ * }
+        { tempa tempb * }
+      if$
+    }
+  if$
+}
+
+% <prev name list> <new name list> compare.names <modified name list>
+FUNCTION {compare.names.aer}
+{ 's :=
+  'tempa :=
+
+%   "current.author = " s * "\\" * write$ newline$
+%   "prev.author = " tempa * "\\" * write$ newline$
+
+  tempa num.names$ 'len1.aer :=  % len1 = the number of previous authors
+  s num.names$ 'len2.aer :=         % len2 = the number of current authors
+
+% len1.aer := min(len1.aer,len2.aer)
+% len1 -> min{ the number of previous authors, the number of current authors }
+  len1.aer len2.aer >
+    { len2.aer 'len1.aer := }
+    { }
+  if$
+
+% start with an empty string, then while the components are the same
+% add "\bysame"
+  ""
+  #1 'i.aer :=
+
+  { i.aer len1.aer > not }
+    { tempa i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      =
+        { #1 i.aer <
+            { " and " * }       % \bysame で省略する著者の前につく and 
+            { }
+          if$
+          "\bysame{}" *
+          i.aer #1 + 'i.aer := } 
+        { #-1 'len1.aer := }
+      if$
+    }
+  while$
+
+% add the rest of the second string
+  { i.aer len2.aer > not }
+    { #1 i.aer <
+        { " and " * }
+        { }
+      if$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$ *
+      i.aer #1 + 'i.aer :=
+    }
+  while$
+}
+
+%%% author
+FUNCTION {format.authors}
+{ author empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer author compare.names.aer 's :=
+          author 'prev.author.aer := }
+        { author 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors}
+{ editor empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer editor compare.names.aer 's :=
+          editor 'prev.author.aer := }
+        { editor 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+      s num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.authors.alt}
+{ author empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        {"\bysame "}
+        { bst.author.pre author remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors.alt}
+{ editor empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre editor remove.ss.period.auth * }
+      if$
+      editor num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+%%% format.in.ed.booktitle
+FUNCTION {format.editors.x}
+{ editor empty$
+    { "" }
+    { bst.editor.btitle.order #0 =
+        { "" }
+        { editor num.names$ #1 >
+           { bst.editors " by " * }
+           { bst.editor  " by " * }
+          if$
+        }
+      if$
+      editor format.names *
+      bst.editor.btitle.order #0 =
+        { editor num.names$ #1 >
+           { bst.editors * }
+           { bst.editor * }
+          if$
+        }
+        { "" * }
+      if$
+    }
+  if$
+}
+
+%%% Remove commas in the cases like "?." and "?,".
+FUNCTION {remove.irrelevant.period.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #-1 #3 substring$ "?,'" =
+      s #-1 #3 substring$ "?.'" = or
+        { s #-3 global.max$ substring$ "'" * }
+        { s #-1 #4 substring$ "?,''" =
+          s #-1 #4 substring$ "?.''" = or
+            { s #-4 global.max$ substring$ "''" * }
+            { s #-1 #2 substring$ "?," =
+              s #-1 #2 substring$ "?." = or
+                { s #-2 global.max$ substring$ "" * }
+                { s #-1 #3 substring$ "?,~" =
+                  s #-1 #3 substring$ "?.~" = or
+                    { s #-4 global.max$ substring$ "?~" * }
+                    's
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% title
+FUNCTION {format.title.sub}
+{ bst.title.lower.case #0 =
+     { bst.title.pre title * bst.title.post * }
+     { bst.title.pre title "t" change.case$ * bst.title.post * }
+  if$
+}
+
+%%% title
+FUNCTION {format.title}
+{ title empty$
+  bst.hide.title #0 = not or
+    { "" }
+    { format.title.sub remove.irrelevant.period.comma }
+  if$
+}
+
+%%% title for misc.
+FUNCTION {format.misc.title}
+{ title empty$
+    { "" }
+    { bst.title.pre title * bst.title.post * }
+  if$
+}
+
+% Convert "-" to "--" (for pages field)
+FUNCTION {n.dashify}
+{ 't :=
+  ""
+  %% while$
+  { t empty$ not }
+  { t #1 #1 substring$ "-" =
+      { t #1 #2 substring$ "--" = not
+          { "--" *
+            t #2 global.max$ substring$ 't :=
+          }
+          { { t #1 #1 substring$ "-" = }
+            { "-" *
+              t #2 global.max$ substring$ 't :=
+            }
+            while$
+          }
+        if$
+      }
+      { t #1 #1 substring$ *
+       t #2 global.max$ substring$ 't :=
+      }
+    if$
+  }
+  while$
+}
+
+%%% year
+FUNCTION {format.year}
+{ year empty$
+    { "there's no year in " cite$ * warning$
+      ", " }
+    { type$ "article" =
+        { bst.year.pre year * extra.label * bst.year.post * }
+        { bst.year.na.pre year * extra.label * bst.year.na.post * }
+      if$
+    }
+  if$
+}
+
+%%% page for book
+FUNCTION {format.book.pages}
+{ pages empty$
+    { "" }
+    { bst.pages.pre pages * bst.pages.post * }
+  if$
+}
+
+%%% Attach tie for the string with two or less characters.
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+    { "~" }
+    { " " }
+  if$
+  swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+
+%%% volume for book
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+    { bst.volume.pre volume * bst.volume.post *
+      series empty$
+        'skip$
+        %% If there is series field
+        { " of " * series * bst.series.post * }
+      if$
+%       "volume and number" number either.or.check
+    }
+  if$
+}
+
+%%% series
+FUNCTION {output.series}
+{ series empty$
+    { "" }
+    { bst.series.pre series * bst.series.post * }
+ if$
+}
+
+%%% number and series
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+      bst.hide.month #0 = not or
+        % number is empty
+        { series empty$
+            { "" }
+            % series is not empty.
+            { output.series }
+          if$
+        }
+        % number is not empty$
+        { series empty$
+            { bst.number.pre number * bst.number.post * }
+            % series is not empty.
+            { bst.in bst.series.pre * series * bst.series.post *
+              bst.number.pre * number * bst.number.post * }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+%%% Number or not.
+FUNCTION {is.num}
+{ chr.to.int$
+  duplicate$ "0" chr.to.int$ < not
+  swap$ "9" chr.to.int$ > not and
+}
+
+FUNCTION {extract.num}
+{ duplicate$ 't :=
+  "" 's :=
+  { t empty$ not }
+  { t #1 #1 substring$
+    t #2 global.max$ substring$ 't :=
+    duplicate$ is.num
+      { s swap$ * 's := }
+      { pop$ "" 't := }
+    if$
+  }
+  while$
+  s empty$
+    'skip$
+    { pop$ s }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%      edition
+
+% Convert edition to 1st, 2nd, 3rd, 4th etc
+FUNCTION {eng.ord}
+{ duplicate$ "1" swap$ *
+  #-2 #1 substring$ "1" =
+     { bst.th * }
+     { duplicate$ #-1 #1 substring$
+       duplicate$ "1" =
+         { pop$ bst.st * }
+         { duplicate$ "2" =
+             { pop$ bst.nd * }
+             { "3" =
+                 { bst.rd * }
+                 { bst.th * }
+               if$
+             }
+           if$
+          }
+       if$
+     }
+   if$
+}
+
+% Convert first, second etc in edition field to 1st, 2nd (from jfm.bst)
+FUNCTION {convert.edition}
+{ edition extract.num "l" change.case$ 's :=
+  s "first" = s "1" = or
+    { bst.first }
+    { s "second" = s "2" = or
+        { bst.second }
+        { s "third" = s "3" = or
+            { bst.third }
+            { s "fourth" = s "4" = or
+                { bst.fourth }
+                { s "fifth" = s "5" = or
+                    { bst.fifth }
+                    { s #1 #1 substring$ is.num
+                        { s eng.ord }
+                        { edition }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% edition
+FUNCTION {format.edition}
+{ edition empty$
+    { "" }
+    { output.state mid.sentence =
+        { bst.edition.pre convert.edition "l" change.case$ * bst.edition.post * }
+        { bst.edition.pre convert.edition "t" change.case$ * bst.edition.post * }
+      if$
+    }
+  if$
+}
+
+%%% month
+FUNCTION {format.month}
+{ month empty$
+  bst.hide.month #0 = not or
+    { "" }
+    { bst.month.pre month * bst.month.post * }
+  if$
+}
+
+%%% year and month
+FUNCTION {format.date}
+{ format.month format.year *
+}
+
+%%% Is multiple pages like 1-100?
+FUNCTION { multi.page.check }
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+
+%%% pages
+FUNCTION {format.pages}
+{ pages empty$
+    { "" }
+    { pages multi.page.check
+      { bst.pages.pre pages n.dashify tie.or.space.connect * bst.pages.post }
+      { bst.page.pre pages tie.or.space.connect * bst.page.post }
+     if$
+    }
+ if$
+}
+
+%%% number
+FUNCTION {format.number}
+{ number empty$
+  bst.hide.number #0 = not or
+    { "" }
+    { bst.number.pre number * bst.number.post * }
+  if$
+}
+
+%%% volume
+FUNCTION {format.volume}
+{ volume empty$
+    'skip$
+    { bst.volume.pre volume * bst.volume.post *
+      bst.year.position #3 =
+        { format.year * }
+        'skip$
+      if$
+    }
+  if$
+}
+
+%%% number, page
+FUNCTION {format.number.pages}
+{ number empty$
+    { format.pages }
+    { format.number format.pages * }
+  if$
+}
+
+%%% volume, page
+FUNCTION {format.volume.pages}
+{ volume empty$
+    { format.pages }
+    { format.volume format.pages * }
+  if$
+}
+
+%%% volume, number, page
+FUNCTION {format.volume.number.pages}
+{ volume empty$
+    { number empty$
+        { format.pages }
+        { format.number format.pages * }
+      if$
+    }
+    { number empty$
+        { format.volume format.pages * }
+        { format.volume format.number * format.pages * }
+      if$
+    }
+  if$
+}
+
+% volume, number, page
+FUNCTION {format.vol.num.pages}
+{ volume empty$
+    %% volume is empty.
+    { number empty$
+        %% number is empty.
+        { pages empty$
+            % warning
+            { "there is no volume, number, and pages in " cite$ * warning$ "" } 
+            { "" format.pages * }
+         if$
+        }
+        %% number is not empty.
+        % warning
+        { "there's a number but no volume in " cite$ * warning$
+          format.number.pages }
+     if$
+    }
+    %% volume is not empty.
+    { number empty$
+        %% number is empty.
+        { format.volume.pages }
+        %% number is not empty.
+        { format.volume.number.pages }
+     if$
+    }
+  if$
+}
+
+%%% chapter
+FUNCTION {format.chapter}
+{ chapter empty$
+    { "" }
+    { type empty$
+        { bst.chapter.pre chapter tie.or.space.connect * bst.chapter.post }
+        { ", " * type " " * chapter * }
+      if$
+    }
+  if$
+}
+
+%%% chapter, pages
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    { pages empty$
+        { "" }
+        { "" format.pages * }
+      if$
+    }
+    { pages empty$
+        { "" format.chapter * }
+        { "" format.chapter * format.pages * }
+      if$
+    }
+  if$
+}
+
+%%% editor and booktitle
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+    { "" }
+    { editor empty$
+        { bst.in format.btitle * }
+        { bst.editor.btitle.order #0 =
+            { bst.in format.editors.x * " " * format.btitle * }
+            { bst.in format.btitle * " " * format.editors.x * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% howpublished
+FUNCTION {format.howpublished}
+{ howpublished empty$
+    { "" }
+    { bst.howpublished.pre howpublished * bst.howpublished.post * }
+  if$
+}
+
+%%% address
+FUNCTION {format.address}
+{ address empty$
+    { "" }
+    { bst.address.pre address * bst.address.post * }
+  if$
+}
+
+%%% publisher
+FUNCTION {format.publisher}
+{ publisher empty$
+    { "" }
+    { bst.publisher.pre publisher * bst.publisher.post * }
+  if$
+}
+
+%%% organization
+FUNCTION {format.organization}
+{ organization empty$
+    { "" }
+    { bst.organization.pre organization * bst.organization.post * }
+  if$
+}
+
+%% publisher and address
+FUNCTION {output.publisher.address}
+{ address empty$
+    { format.publisher "publisher" output.check.nocomma }
+    { bst.address.position #0 = 
+        { format.address output.nocomma
+          format.publisher "publisher" output.check.nocomma }
+        { format.publisher "publisher" output.check.nocomma
+          format.address output.nocomma }
+      if$
+    }
+  if$
+}
+
+%% address, organization, publisher
+FUNCTION {output.address.organization.publisher}
+{ address empty$
+    %% address is empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            'skip$
+            { format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            { format.organization "organization" output.check.nocomma }
+            { format.organization "organization" output.check.nocomma
+              format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+     if$
+    }
+    %% address is not empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            %% publisher is empty
+            { format.address output.nocomma }
+            %% publisher is not empty
+            { bst.address.position #0 =
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            %% publisher is empty
+            { format.organization "organization" output.check.nocomma
+              format.address output.nocomma }
+            %% publisher is not empty
+            { format.organization "organization" output.check.nocomma
+              bst.address.position #0 = 
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+     if$
+    }
+  if$
+}
+
+%%% misc
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+    'skip$
+    { pop$ " " type * }
+  if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+    { bst.techrep }
+    { " " type * }
+  if$
+  number empty$
+    { "t" change.case$ }
+    { number tie.or.space.connect }
+  if$
+}
+
+%%% phdthesis
+FUNCTION {format.phd}
+{ bst.phdthesis }
+
+%%% mastersthesis
+FUNCTION {format.mthesis}
+{ bst.mthesis }
+
+%%% school
+FUNCTION {format.school}
+{ school empty$
+    { "" }
+    { bst.school.pre school * bst.school.post * }
+  if$
+}
+
+%%% institution
+FUNCTION {format.institution}
+{ institution empty$
+    { "" }
+    { bst.institution.pre institution * bst.institution.post * }
+  if$
+}
+
+%%% remove first ? characters.
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+
+FUNCTION {format.note}
+{ note empty$
+    { "" }
+    { bst.note.pre note * bst.note.post * }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        \havarditem
+
+FUNCTION {output.bibitem}
+{ newline$
+  "\harvarditem[" write$
+  alabel write$                 % alabel <- abbreviated citation
+  "]{" write$
+  flabel write$                 % flabel <- full citation
+  "}{" write$
+  cyear write$
+  % cyear = year
+  "}{" write$
+  cite$ write$                  % cite$ -> pusch keyword
+  "}" write$
+  % If number index is on
+  bst.use.number.index #0 =
+     'skip$
+     { index #1 + 'index :=
+       "" 'preone :=
+       "" 'preten :=
+       bst.number.index.digit "1" =
+         'skip$
+         { bst.number.index.digit "2" =
+           { "\hskip0.5em" 'preone := }
+           { bst.number.index.digit "3" =
+              { "\hskip1em" 'preone :=
+                "\hskip0.5em" 'preten := }
+              'skip$
+             if$
+           }
+         if$
+         }
+       if$  
+     }
+  if$
+  newline$
+  before.all 'output.state :=
+  ""
+  % number index
+  bst.use.number.index #0 =
+     'skip$
+     { index #10 <
+         % Insert spaces according to digit of number index.
+         { preone }
+         { index #100 <
+             { preten }
+             { "" }
+           if$
+         }
+       if$
+       bst.number.index.pre * index int.to.str$ * bst.number.index.post * write$
+     }
+ if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        article
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.journal "journal" output.check.nocomma
+  bst.year.position #2 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+  format.vol.num.pages output.nocomma
+
+  bst.year.position #1 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        book
+
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check 
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  format.edition output.nocomma
+  format.book.pages output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        booklet
+
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output.nocomma
+  format.year output.nocomma
+  format.misc.title "title" output.check.nocomma
+  format.howpublished output.nocomma
+  format.address output.nocomma
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inbook
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+%   format.book remove.pre.comma "title" output.check.nocomma
+  format.book "title" output.check.nocomma
+  format.edition output.nocomma
+
+  format.bvolume output.nocomma
+  format.chapter.pages "chapter and pages" output.check.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       incollection
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.edition output.nocomma
+  format.chapter.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inproceedings
+
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  format.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       conference
+
+FUNCTION {conference}
+{ inproceedings }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       manual
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization empty$
+        'skip$
+        { organization output.nonnull.nocomma
+          address output.nocomma
+        }
+      if$
+    }
+    { format.authors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  author empty$
+    { organization empty$
+        { format.address new.block.check
+          format.address output.nocomma
+        }
+        'skip$
+      if$
+    }
+    { output.address.organization.publisher }
+  if$
+  format.edition output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       mastersthesis
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.mthesis format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       misc
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Online
+
+FUNCTION {online}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       phdthesis
+
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  format.phd
+  format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  address empty$
+    'skip$
+    { format.address output.nocomma }
+  if$
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       proceedings
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization output.nocomma }
+    { format.editors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.btitle remove.pre.comma "title" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       techreport
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.tr.number output.nonnull.nocomma
+  format.institution "institution" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       unpublished
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  bst.year.position #0 = not
+    { format.date remove.pre.comma output.nocomma }
+    { month empty$
+        'skip$
+        { format.month remove.pre.comma output.nocomma }
+      if$
+    }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note "note" output.check.nocomma
+  fin.entry
+}
+
+FUNCTION {default.type}
+{ misc }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Alias for month names:
+
+MACRO {jan} {"January"}
+MACRO {feb} {"February"}
+MACRO {mar} {"March"}
+MACRO {apr} {"April"}
+MACRO {may} {"May"}
+MACRO {jun} {"June"}
+MACRO {jul} {"July"}
+MACRO {aug} {"August"}
+MACRO {sep} {"September"}
+MACRO {oct} {"October"}
+MACRO {nov} {"November"}
+MACRO {dec} {"December"}
+
+%%% Read entries:
+READ
+
+%%% Variable for remembering the order of citation.
+INTEGERS { order.num }
+FUNCTION {initialize.order.num}
+{
+  #1 'order.num :=
+}
+%%% Initialize a variables
+EXECUTE {initialize.order.num}
+
+%%% Variable for remembering the order of citation.
+FUNCTION {set.order.cited}
+{
+  order.num 'order.cited :=
+  #1 order.num + 'order.num :=
+}
+%%% Iterate for all entries:
+ITERATE {set.order.cited}
+
+%%% check the value of nameorder field.
+FUNCTION {set.nameorder}
+{ nameorder empty$
+    { "" 'nameorder.temp := }
+    { nameorder 'nameorder.temp := }
+  if$
+}
+%%% Iterate for all entries:
+ITERATE {set.nameorder}
+
+%%% Remove symbols and convert to lowercase.
+FUNCTION {sortify}
+{ purify$ "l" change.case$ }
+
+%%% names for sorting
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { nameptr #1 >
+        { ", " * }
+        'skip$
+      if$
+      s nameptr "{ll}{ f}{ j}" format.name$ 't :=
+      nameptr numnames = t "others" = and
+        { bst.and.others.output *}
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.names.abb}
+{ 's :=
+  s num.names$ 'numnames :=
+  numnames bst.and.others.num <
+     { s sort.format.names }
+     { s #1 "{ll}{ f}{ j}" format.name$ " zz " * }
+  if$
+}
+
+%%% Label for full author name.
+FUNCTION {format.lab.names.full}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{vv~}{ll}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                  { bst.and.nameorder * t * }
+                  { ", " * t * }
+                if$
+              }
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 > 
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.ands * t * }
+                        if$
+                      }
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.and * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+  numnames #1 > #1 #2 = and {", eds" *} {} if$
+  numnames #1 = #1 #2 = and {", ed" *} {} if$
+}
+
+%%% laberl for abbreviated author name.
+FUNCTION {format.lab.names.abb}
+{ 's :=
+   s num.names$ 'numnames :=
+   numnames bst.and.others.num <
+     % if the number of authors is less than bst.and.others.num, full name.
+     { s format.lab.names.full }
+     % if the number of authors is equal or more than bst.and.others.num, abbreviated name.
+     { s #1 "{ll}" format.name$ bst.and.others.output * }
+   if$
+}
+
+%%% abbreviated author
+FUNCTION {author.key.label.abb}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.key.label.full}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {format.names.full.wo.and}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{ll}{, ff}{, jj}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { " " * t * }
+              { t "others" =
+                  { " " * }
+                  { numnames #2 > 
+                      { " " * t * }
+                      { " " * t * }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+}
+
+FUNCTION {author.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.editor.key.full.wo.and}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.names.full.wo.and }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {editor.key.organization.key.full.wo.and}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.key.organization.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+%%% abbreviated author
+FUNCTION {author.editor.key.label.abb}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.abb }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.editor.key.label.full}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.full }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.full}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.abb}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.full}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.full }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.abb}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.abb }
+  if$
+}
+
+%%% Convert numbers: 0->9, 1->8, 2->7,..., 9->0
+FUNCTION {reverse.num}
+{ 's :=
+  s "1" =
+    { "8" 'year.num := }
+    { s "2" =
+        { "7" 'year.num := }
+        { s "3" =
+            { "6" 'year.num := }
+            { s "4" =
+                { "5" 'year.num := }
+                { s "5" =
+                    { "4" 'year.num := }
+                    { s "6" =
+                        { "3" 'year.num := }
+                        { s "7" =
+                            { "2" 'year.num := }
+                            { s "8" =
+                                { "1" 'year.num := }
+                                { s "9" =
+                                    { "0" 'year.num := }
+                                    { s "0" =
+                                        { "9" 'year.num := }
+                                        { "9" 'year.num := }
+                                    if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+  year.num
+}
+
+%%% Convert year (large number -> small number)
+FUNCTION {convert.year}
+{ 't := 
+  bst.reverse.year #0 =
+    { t 'tt := }
+    { t #1 #1 substring$ reverse.num 
+      t #2 #1 substring$ reverse.num *
+      t #3 #1 substring$ reverse.num *
+      t #4 #1 substring$ reverse.num * 'tt := }
+  if$
+  tt
+}
+
+%%% cyear
+FUNCTION {calc.cyear}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.full.wo.and
+    { type$ "proceedings" =
+        'editor.key.organization.key.full.wo.and
+        { type$ "manual" =
+            'author.key.organization.key.full.wo.and
+            'author.key.full.wo.and
+          if$
+        }
+      if$
+    }
+  if$
+  duplicate$
+  year empty$
+    { "2199" 'cyear := }
+    { year 'cyear := }
+  if$
+  year empty$
+    { " " "2199" convert.year * field.or.null * }
+    { " " year convert.year * field.or.null * }
+  if$
+  sortify 'sort.label :=
+  % For debug
+  econ.debug #0 = not
+    { "sort.label = ``\texttt{" write$
+      sort.label write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+ pop$
+}
+
+FUNCTION {calc.sort.label.abb}
+{ author empty$
+    { editor empty$
+       { "" }
+       { editor 's := }
+      if$
+    }
+    { author 's := }
+  if$
+  s sort.format.names.abb 't :=
+  year empty$
+    { t sortify " " * "2199" convert.year * 'sort.label.abb := }
+    { t sortify " " * year convert.year * 'sort.label.abb := }
+  if$
+  econ.debug #0 = not
+    { "sort.label.abb = ``\texttt{" write$
+      sort.label.abb write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+  if$
+}
+
+%%% flabel
+FUNCTION {calc.flabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.full
+    { type$ "proceedings" =
+        'editor.key.organization.label.full
+        { type$ "manual" =
+            'author.key.organization.label.full
+            'author.key.label.full
+          if$
+        }
+      if$
+    }
+  if$
+  'flabel :=
+  author empty$
+    'skip$
+    { author num.names$ 'numnames :=
+      numnames bst.max.author.num >
+        { alabel 'flabel := }
+        'skip$
+      if$
+    }
+  if$
+  % For debug
+  econ.debug #0 = not
+    { "flabel = ``\texttt{" write$
+      flabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% alabel
+FUNCTION {calc.alabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.abb
+    { type$ "proceedings" =
+        'editor.key.organization.label.abb
+        { type$ "manual" =
+            'author.key.organization.label.abb
+            'author.key.label.abb
+          if$
+        }
+      if$
+    }
+  if$
+  'alabel :=
+  % For debug
+  econ.debug #0 = not
+    { "alabel = ``\texttt{" write$
+      alabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% title for sorting
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+
+%%% author for sorting
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+%%% editor for sorting
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+
+%%% 1,...,9 -> 001,...,009
+%%% 10,...,99 -> 010,...,099
+FUNCTION {add.zero.to.number}
+{ 's :=
+    s text.length$ #1 =
+      { "00" s * }
+      { s text.length$ #2 =
+          { "0" s * }
+          { s }
+        if$
+      }
+   if$
+}
+
+%% entry type
+FUNCTION {bst.sort.entry.type.order}
+{ 'item.type :=
+  item.type "article" =
+    { "01" }
+    { item.type "book" =
+        { "02" }
+        { item.type "booklet" =
+            { "03" }
+            { item.type "comment" =
+                { "04" }
+                { item.type "conference" =
+                    { "05" }
+                    { item.type "inbook" =
+                        { "06" }
+                        { item.type "incollection" =
+                            { "07" }
+                            { item.type "inproceedings" =
+                                { "08" }
+                                { item.type "manual" =
+                                    { "09" }
+                                    { item.type "masterthesis" =
+                                        { "10" }
+                                        { item.type "misc" =
+                                           { "11" }
+                                           { item.type "phdthesis" =
+                                              { "12" }
+                                              { item.type "proceedings" =
+                                                 { "13" }
+                                                 { item.type "techreport" =
+                                                    { "14" }
+                                                    { item.type "unpublished" =
+                                                       { "15" }
+                                                       { "16" }
+                                                      if$
+                                                    }
+                                                   if$
+                                                 }
+                                                if$
+                                              }
+                                             if$
+                                           }
+                                          if$
+                                        }
+                                      if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+}
+
+%%% Create sort.key$: absorder -> author -> year -> order -> month -> title.
+FUNCTION {presort.one}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " *
+  sort.label.abb *
+  " " *  
+  type$ "book" = type$ "inbook" = or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  * " " *
+  " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " * sort.label * " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% Codes for debugging
+FUNCTION {calc.alabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.alabel: alabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {calc.flabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.flabel: flabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {presort.one.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (1st time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (2nd time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.cyear.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.cyear: sort.label = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.sort.label.abb.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.sort.label.abb: sort.label.abb = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+%%% alabel
+EXECUTE {calc.alabel.mess}
+ITERATE {calc.alabel}
+
+%%% flabel
+EXECUTE {calc.flabel.mess}
+ITERATE {calc.flabel}
+
+%%% cyear and sort.label
+EXECUTE {calc.cyear.mess}
+ITERATE {calc.cyear}
+
+%%%
+EXECUTE {calc.sort.label.abb.mess}
+ITERATE {calc.sort.label.abb}
+
+%%% Sorting by $sort.key (first time)
+%
+% Sorting is done in two times. This is the first time.
+%
+EXECUTE {presort.one.mess}
+ITERATE {presort.one}
+SORT
+
+FUNCTION {forward.pass}
+{ bst.use.bysame #0 = bst.use.bysame #2 = or
+    % Not use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+    }
+    % Use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+      author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+      if$
+      'this.author :=
+      % format.names 'this.author :=
+      this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {reverse.pass}
+{ next.extra "b" =
+    { "a" 'extra.label := }
+    'skip$
+  if$
+  extra.label empty$ not
+    { cyear extra.label * }
+    { cyear "" * }
+  if$
+  "" field.or.null *
+  'cyear :=
+  extra.label 'next.extra :=
+}
+
+%%% \bysame
+ITERATE {forward.pass}
+
+REVERSE {reverse.pass}
+
+%%% Sorting by sort.key$ (second time)
+EXECUTE {presort.two.mess}
+ITERATE {presort.two}
+SORT
+
+FUNCTION {reset.prev.author}
+{ "xxyyzz" 'prev.author := }
+
+EXECUTE {reset.prev.author}
+
+FUNCTION {forward.pass.two}
+{ bst.use.bysame #1 = 
+    { author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+     if$
+     'this.author :=
+     this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+     if$
+    }
+   'skip$
+  if$
+}
+
+ITERATE {forward.pass.two}
+
+FUNCTION{punctuation}
+{
+  "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" write$ newline$
+  "%  This bbl file is created by " econ.file * " ver." * econ.version *          write$ newline$
+  "%  The latest " econ.file * " is available at " *			write$ newline$
+  "%  <https://github.com/ShiroTakeda/econ-bst>"                        write$ newline$ newline$
+}
+
+EXECUTE {punctuation}
+
+FUNCTION {begin.bib}
+{
+  preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  bst.use.bysame #0 =
+     % Not use \bysame.
+     'skip$
+     % Use \bysame.
+     { "%%% Definition of \bysame" write$ newline$
+       "\ifx\undefined\bysame" write$ newline$
+       "\newcommand{\bysame}{" bst.bysame.definition * "}" *
+       write$ newline$
+       "\fi" write$ newline$ newline$ }
+  if$
+  %% When number index is attached to the beginning of each item.
+  bst.use.number.index #0 =
+     'skip$
+     { bst.number.index.digit "1" =
+         % one digit.
+         { bst.number.index.bibhang.one }
+         { bst.number.index.digit "2" =
+            % two digits.
+            { bst.number.index.bibhang.ten }
+            % three or more digits.
+            { bst.number.index.bibhang.hund }
+           if$
+         }
+       if$
+       'hang :=
+       "%%% Redefinition of \bibhang" write$ newline$
+       "\ifx\undefined\bibhang" write$ newline$
+       "\relax" write$ newline$
+       "\else" write$ newline$
+       "\setlength{\bibhang}{"
+       hang * "}" * write$ newline$ 
+       "\fi" write$ newline$ newline$
+       }
+  if$
+  "\begin{thebibliography}{xxx}" write$ newline$
+
+  %% Initialize the variable `index'.
+  #0 'index :=
+}
+
+FUNCTION {end.bib}
+{ newline$ "\end{thebibliography}" write$ newline$ }
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+EXECUTE {end.bib}
+
+%  --------------------
+%  Local Variables:
+%  fill-column: 78
+%  mode: bst
+%  End:
diff --git a/Master/texmf-dist/bibtex/bst/econ-bst/econ-aea.bst b/Master/texmf-dist/bibtex/bst/econ-bst/econ-aea.bst
new file mode 100644
index 00000000000..21f2fb48035
--- /dev/null
+++ b/Master/texmf-dist/bibtex/bst/econ-bst/econ-aea.bst
@@ -0,0 +1,3604 @@
+%% aea.bst: BibTeX style file for journals of American Economic Association (AEA).
+%
+% Author: Shiro Takeda
+% Maintainer: Shiro Takeda
+% Copyright (C) 2001-2018 Shiro Takeda
+% First-written:       <2007/07/28>
+% Version: 2.7
+% Keywords: TeX, BibTeX, bst 
+% URL: https://github.com/ShiroTakeda/econ-bst
+
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% The Current Maintainer of this work is Shiro Takeda.
+
+%% Main features of aea.bst
+
+% "aea.bst" is a BibTeX style file for journals of American Economic
+% Association such as
+% - The American Economic Review
+% - Papers and Proceedins
+% - Journal of Economic Literature
+% - American Economics Journals
+% 
+% AEA Style Guide is found at the following site:
+% https://www.aeaweb.org/journals/aer/submissions/accepted-articles/styleguide
+
+% "aea.bst" is created from "econ.bst" which is distributed from
+% https://github.com/ShiroTakeda/econ-bst
+
+% version number
+FUNCTION {econ.version} { "2.7" }
+
+% File name
+FUNCTION {econ.file} { "aer.bst" }
+
+% Debug mode. Non-zero makes debug mode on.
+FUNCTION {econ.debug}
+{ #0 }    % Debug mode off (default).
+% { #1 }    % Debug mode on.
+
+ENTRY
+  %%% Declaration of field
+  { access address author booktitle chapter doi edition editor howpublished
+    institution journal key month note number organization pages publisher
+    school series title type url volume year
+  % Fields specific to econ.bst
+    order absorder nameorder
+  }
+
+  % Definition of entry variable.  The entry variable is a variable which has
+  % different values according to different entries.
+  %% Integer entry variable:
+  { order.cited }
+
+  %% String entry variable
+  { label cyear flabel alabel extra.label sort.label sort.label.abb
+    extra.label.bysame nameorder.temp jname }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Use \bysame or not.
+%
+% If set to #0, \bysame is not used.
+% If set to #1, \bysame is used 
+% If set to #2, \bysame is used (alternative abbreviation style).
+%
+% Note that integer number is expressed as # + integer in bst file.
+% \bysame is the function that abbreviates succession of the same authors' name by ---.
+%
+% See econ-sample.pdf for details.
+% 
+FUNCTION {bst.use.bysame}
+{ #0 }    % Not use \bysame
+% { #1 }    % -> Use \bysame (default)
+% { #2 }    % -> Use \bysame of alternative style.
+
+% The definition of \bysame command.
+%
+FUNCTION {bst.bysame.definition}
+{ "\hskip.3em \leavevmode\rule[.5ex]{3em}{.3pt}\hskip0.5em" } % (default)
+% { "\leavevmode\hbox to\leftmargin{\hrulefill\,\,}" } % If you set #2 to bst.use.bysame, use this.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% The order of fist and last name.
+%
+FUNCTION {bst.author.name}
+{ #0 }    % (default)
+% { #1 }
+% { #2 }
+
+% Case of #0: First author -> last-first, other authors -> first-last. 
+% Fujita, Masahisa, Paul R. Krugman, and Anthony J. Venables. 
+
+% Case of #1: All authors -> last-first
+% Fujita, Masahisa, Krugman, Paul R., and Venables, Anthony J.
+
+% Case of #2: All authors -> first-last
+% Masahisa Fujita, Paul R. Krugman, and Anthony J. Venables.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Abbreviate first name of authors (editors):
+%
+FUNCTION {bst.first.name.initial}
+{ #0 }    % #0 -> full letters (default).
+% { #1 }    % Non-zero -> initial letter only.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Decapitalize of strings in title field.
+%
+FUNCTION {bst.title.lower.case}
+{ #0 }    % If #0, not decapitalize title (default).
+% { #1 }    % If non-#0, decapitalize title
+
+% Hide title filed.
+%
+FUNCTION {bst.hide.title}
+{ #0 }    % #0 -> Title field is displayed (default)
+% { #1 }    % Non-zer -> Title field is hidden 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide month.
+%
+FUNCTION {bst.hide.month}
+{ #0 }    % #0 -> show month field (default).
+% { #1 }    % non-#0 -> hide month field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Attach number index like plain.bst.
+%
+FUNCTION {bst.use.number.index}
+{ #0 }    % Not use number index (default).
+% { #1 }    % Non-#0 -> Use number index
+
+% The string before number index:
+%
+FUNCTION {bst.number.index.pre}
+{ "[" }    % (default)
+
+% The string after number index.  Adjustment is recommended.
+%
+FUNCTION {bst.number.index.post}
+{ "]\hskip1.0em " }    % (default)
+
+% Maximum digit of number index:
+% If the number of reference items >= 100, set 3 to this function.
+% If the number of reference items < 100, set 2 to this function.
+% If the number of reference items < 10, set 1 to this function.
+%
+FUNCTION {bst.number.index.digit}
+{ "2" }    % (default)
+% { "3" }
+
+% The functions below are used to adjust space and postion.  If you use fonts
+% other than computer modern fonts, you had better make adjustments.
+%
+% Setting for bst.number.index.digit = 1:
+FUNCTION {bst.number.index.bibhang.one}
+{ "2.05em" }    % (default)
+% Setting for bst.number.index.digit = 2:
+FUNCTION {bst.number.index.bibhang.ten}
+{ "2.55em" }    % (default)
+% Setting for bst.number.index.digit = 3:
+FUNCTION {bst.number.index.bibhang.hund}
+{ "3.05em" }    % (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Position of "year":
+%
+% You can choose the position of year by this function.
+%
+% If set to #0, year is placed right after "author".
+% If set to non-zero, year is placed at the end (before note field) except for
+% aritcle type entry. 
+%
+% In article type entry, the position of year changes according to the
+% following rule:
+% 
+% #1 -> year is placed at the end.
+% #2 -> year is placed after journal name in aritcle type entry.
+% #3 -> year is placed after volume in aritcle type entry.
+%
+FUNCTION {bst.year.position}
+{ #0 }    % (default).
+% { #1 }    % Last place before note.
+% { #2 }    % After journal name for aticle type entry.
+% { #3 }    % After volume for aticle type entry.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If 0, references are sorted by old documents -> recent documents.  If
+% non-zero, reverse order.
+FUNCTION {bst.reverse.year}
+{ #0 }    % Normal order (old -> recent) (default).
+% { #1 }    % inverse order (recent -> old)
+
+% If non-zero, sort references by using year field as the primary key
+% (chronological sorting).
+FUNCTION {bst.sort.year}
+{ #0 }    % Normal case: year is used as the sorting key next to author (default).
+% { #1 }    % year is used as the primary sorting key.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If non-zero, references are listed in citation order.
+%
+FUNCTION {bst.no.sort}
+{ #0 }    % (default)
+% { #1 }    % listed in citation order.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Non-zero -> sort references by entry type (article, book, incollection etc.)
+%
+FUNCTION {bst.sort.entry.type}
+{ #0 }    % #0 -> Normal (not sort references by entry type) (default).
+% { #1 }    % Non-zero -> sort references by entry type.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use absorder field to sort items.  Otherwise, ignore absorder field.
+%
+FUNCTION {bst.notuse.absorder.field}
+{ #0 }    % #0 -> Use absorder (default).
+% { #1 }    % Non-#0 -> Not use absorder.
+%
+% Order of priority to sort items
+% 
+% absorder -> author -> year -> order -> month -> title
+%
+% wehre absorder and order fields are specific to econ.bst.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use order field to sort items.  Otherwise, ignore order field.
+% Note: order field is specific to econ.bst.
+FUNCTION {bst.notuse.order.field}
+{ #0 }    % #0 -> Use order field (default).
+% { #1 }    % Non-#0 -> not use order field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%     and
+
+%%% String used to separate author names in references.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.and}
+{ ", and " }
+% { " and " }    % (default)
+
+%%% String used to separate author names in references (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.ands}
+{ ", and " }    % (default)
+
+%%% String used to separate author names in citation part.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.cite.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in citation part (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.cite.ands}
+{ ", and " }
+% { " and " }    % (default)
+
+%%% If you want to use random author order for some bibliography entries, set
+% non-zero to this function.
+% 
+FUNCTION {bst.use.nameorder}
+{ #1 }  % Use random order (default)
+% { #0 }        % Not use random order
+
+%%% String used to separate author names in references for the entry of random
+% author order.
+%
+FUNCTION {bst.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+%%% String used to separate author names in citation part for the entry of
+% random author order
+%
+FUNCTION {bst.cite.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Author names in the citation part are abbreviated by et al. if the number of
+% authors is greater or equal to bst.and.others.num.
+FUNCTION {bst.and.others.num}
+{ #3 }    % If the number of authors is greater or equal to three (default).
+
+% If the number of authors is greater or equal to bst.max.author.num, only
+% first author is listed and other authors' names are abbreviated as "et al.".
+FUNCTION {bst.max.author.num}
+{ #12 }    % If the number of authors is greater or equal to 12 (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Strings used when abbreviating multiple-authors in citation part.
+FUNCTION {bst.and.others}
+{ " et~al." }    % (default)
+
+% Strings used when abbreviating multiple-authors in citation part for entries
+% with random author order.
+FUNCTION {bst.and.others.nameorder}
+{ " \textcircled{r}~al." }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       author 
+
+% The string before author:
+%
+FUNCTION {bst.author.pre}
+{ "\textbf{" }
+% { "" }    % (default)
+
+% The string after author:
+%
+FUNCTION {bst.author.post}
+{ ".}" }
+% { "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       year
+
+% The string before year only for aritcle type entry.
+%
+FUNCTION {bst.year.pre}
+{ " " }
+% { " (" }    % (default)
+
+% The string after year only for aritcle type entry.
+%
+FUNCTION {bst.year.post}
+{ ". " }
+% { ") " }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.pre}
+{ " " }
+% { " (" }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.post}
+{ ". " }
+% { ") " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       title (except for title in book)
+
+% The string before title:
+%
+FUNCTION {bst.title.pre}
+{ "``" }    % (default)
+
+% The string after title:
+%
+FUNCTION {bst.title.post}
+{ ".''" }
+% { ",''" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       tile for book:
+
+% The string before book title:
+%
+FUNCTION {bst.book.pre}
+{ " \textit{" }    % (default)
+
+% The string after book title:
+%
+FUNCTION {bst.book.post}
+{ "}." }
+% { "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       booktitle
+
+% The string before booktitle:
+%
+FUNCTION {bst.btitle.pre}
+{ " \textit{" }    % (default)
+
+% The string after booktitle:
+%
+FUNCTION {bst.btitle.post}
+{ "}," }
+% { "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       journal name
+
+% The string before journal name:
+%
+FUNCTION {bst.journal.pre}
+{ " \textit{" }    % (default)
+
+% The string after journal name:
+%
+FUNCTION {bst.journal.post}
+{ "}" }    % (default)
+
+% Use the abbreviated journal name
+%
+% If set to #0, do not use abbreviated journal name.
+% If set to non-#0, use abbreviated journal name.
+%
+FUNCTION {bst.journal.name.abb}
+{ #0 }    % (default)
+% { #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       editor notation:
+
+% The string that indicates multiple editors:
+%
+FUNCTION {bst.editors}
+{ " eds. " }    % (default)
+
+% The string that indicates single editor:
+%
+FUNCTION {bst.editor}
+{ " ed. " }    % (default)
+
+% Order of editor and booktitle in incollection and inproceedings entries.
+%
+% If set to #0:         editors -> booktitle order
+% If set to non-zero:   booktitle -> editors order
+%
+FUNCTION {bst.editor.btitle.order}
+{ #1 }
+% { #0 }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       edition
+
+% The string before edition:
+%
+FUNCTION {bst.edition.pre}
+{ ", " }    % (default)
+
+% The string after edition:
+%
+FUNCTION {bst.edition.post}
+{ " edition" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       volume
+
+% The string before volume:
+%
+FUNCTION {bst.volume.pre}
+{ " " }
+% { ", " }    % (default)
+
+% The string after volume:
+%
+FUNCTION {bst.volume.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       number
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide number.  If non-zero, number is suppressed. 
+FUNCTION {bst.hide.number}
+{ #0 }    % #0 -> show number field (default)
+% { #1 }    % non-#0 -> Hide number field.
+
+% The string before number:
+%
+FUNCTION {bst.number.pre}
+{ " (" }    % (default)
+
+% The string after number:
+%
+FUNCTION {bst.number.post}
+{ "): " }
+% { ")" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       in 
+
+% In
+%
+FUNCTION {bst.in}
+{ " In " }
+% { " in " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       page
+
+% The string before page (multiple pages):
+%
+FUNCTION {bst.pages.pre}
+{ " " }
+% { ", pp." }    % (default)
+
+% The string before page:
+%
+FUNCTION {bst.page.pre}
+{ "" }
+% { ", " }    % (default)
+
+% The string after page (multiple pages):
+%
+FUNCTION {bst.pages.post}
+{ "" }    % (default)
+
+% The string after page:
+%
+FUNCTION {bst.page.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       chapter
+
+% The string before chapter:
+%
+FUNCTION {bst.chapter.pre}
+{ ", Chap." }    % (default)
+
+% The string after chapter:
+%
+FUNCTION {bst.chapter.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       month
+
+% The string before month:
+%
+FUNCTION {bst.month.pre}
+{ ", " }    % (default)
+
+% The string after month:
+%
+FUNCTION {bst.month.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       address
+% The string before address:
+%
+FUNCTION {bst.address.pre}
+{ ", " }    % (default)
+
+% The string after address:
+%
+FUNCTION {bst.address.post}
+{ "" }    % (default)
+
+% You can choose the order of address and publisher by this function.
+%
+% If #0,        address -> publisher order (the default value).
+% If non-zero,  publisher -> address order.
+
+FUNCTION {bst.address.position}
+{ #0 }    % Address is placed before publisher (default)
+% { #1 }    % Address is placed after publisher 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       publisher
+
+% The string before publisher:
+%
+FUNCTION {bst.publisher.pre}
+{ ": " }    % (default)
+
+% The string after publisher:
+%
+FUNCTION {bst.publisher.post}
+{ ", " }
+% { "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       series
+
+% The string before series:
+%
+FUNCTION {bst.series.pre}
+{ ", " }    % (default)
+
+% The string after series:
+%
+FUNCTION {bst.series.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       organization
+
+% The string before organization:
+%
+FUNCTION {bst.organization.pre}
+{ ", " }    % (default)
+
+% The string after organization:
+%
+FUNCTION {bst.organization.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       school
+
+% The string before school:
+%
+FUNCTION {bst.school.pre}
+{ ", " }    % (default)
+
+% The string after school:
+%
+FUNCTION {bst.school.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       institution
+
+% The string before institution:
+%
+FUNCTION {bst.institution.pre}
+{ ", " }    % (default)
+
+% The string after institution:
+%
+FUNCTION {bst.institution.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       howpublished
+
+% The string before howpublished:
+%
+FUNCTION {bst.howpublished.pre}
+{ " " }    % (default)
+
+% The string after howpublished:
+%
+FUNCTION {bst.howpublished.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       url
+
+% Show or Hide url.  If non-zero, url is displayed. Otherwise, url is suppressed. 
+FUNCTION {bst.show.url}
+{ #1 }    % non-#0 -> Show url field (default)
+% { #0 }    % #0 -> Not show url field.
+
+% The string before url:
+%
+FUNCTION {bst.url.pre}
+{ ", \url{" }	% (default)
+
+% The string after url:
+%
+FUNCTION {bst.url.post}
+{ "}" }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Access
+
+% This setting is valid only if there are "access" field in bib
+% files. The value of access field indicates accessed date for URL.
+
+% The string before access.
+FUNCTION {bst.access.pre}
+{ ", accessed on " } % (default)
+
+% The string after access.
+FUNCTION {bst.access.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       DOI (digital object identifier)
+
+% This setting is valid only if there are "doi" field in bib files.
+
+% Show or Hide DOI.  If non-zero, DOI is displayed. Otherwise, DOI is suppressed. 
+FUNCTION {bst.show.doi}
+{ #1 }    % non-#0 -> Show DOI field (default)
+% { #0 }    % #0 -> Not show DOI field.
+
+% The string before DOI:
+%
+FUNCTION {bst.doi.pre}
+{ ". \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * }
+% { ", \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * } % (default)
+
+% The string after DOI:
+%
+FUNCTION {bst.doi.post}
+{ "}}" }    % (default)
+
+% How to show URL and DOI fields when both fields exist.
+%
+% #0 -> Both fields are displayed
+% #1 -> Only URL field is displayed
+% #2 -> Only DOI field is displayed
+%
+FUNCTION {bst.url.doi}
+% { #0 }    % -> Both fields are displayed
+% { #1 }    % -> Only URL field is displayed
+{ #2 }    % (default) --> Only DOI field is displayed 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Other functions:
+
+% The string before note.
+FUNCTION {bst.note.pre}
+{ ", " }    % (default)
+
+% The string after note.
+FUNCTION {bst.note.post}
+{ "" }    % (default)
+
+% The string that represents Technical report:
+%
+FUNCTION {bst.techrep}
+{ "Technical Report" }    % (default)
+
+% The string that represents master thesis:
+%
+FUNCTION {bst.mthesis}
+{ " Master's thesis" }    % (default)
+
+% The string that represents phd thesis:
+%
+FUNCTION {bst.phdthesis}
+{ " Ph.D. dissertation" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization end here:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FUNCTION {bst.first}
+{ "1st" }
+
+FUNCTION {bst.second}
+{ "2nd" }
+
+FUNCTION {bst.third}
+{ "3rd" }
+
+FUNCTION {bst.fourth}
+{ "4th" }
+
+FUNCTION {bst.fifth}
+{ "5th" }
+
+FUNCTION {bst.st}
+{ "st" }
+
+FUNCTION {bst.nd}
+{ "nd" }
+
+FUNCTION {bst.rd}
+{ "rd" }
+
+FUNCTION {bst.th}
+{ "th" }
+
+%%%%% memo by Takeda
+
+% "a" 'b := indicates substituting string "a" for variable b.
+
+% Integer number #0, #1,...
+
+%%% Function definition:
+%
+% FUNCTION {name}
+% { 's :=
+%
+% }
+%
+% This is the definition of a function named "name".   The function "name" is
+% used in the following way 
+%
+% "foo" name
+% "foo" is an argument for the function "name".
+%
+% About the definition of a function with more than two arguments, see the
+% definition of "chop.word".
+
+%%% Declaration of variables:
+
+%% String global variables:
+STRINGS { s t tt }
+STRINGS { year.num }
+STRINGS { preone preten }
+STRINGS { last.sort.label next.extra prev.author prev.author.aer this.author }
+STRINGS { hang }
+STRINGS { item.type }
+STRINGS { tempa tempb }
+
+%% Integer global variables:
+INTEGERS { nameptr namesleft numnames name.num }
+INTEGERS { multiresult }
+INTEGERS { index }
+INTEGERS { len }
+INTEGERS { last.extra.num }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+INTEGERS { last.period.comma }
+INTEGERS { len1.aer len2.aer i.aer }
+
+%%% Definition of functions:
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+
+%%% Initialize variables:
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+
+%%% Remove comma and add period:
+%
+%%%
+FUNCTION {add.period.x}
+{ duplicate$
+  #-1 #1 substring$ "," =
+    { #-2 global.max$ substring$ "." * }
+    { duplicate$
+      #-1 #2 substring$ ". " =
+        { #-3 global.max$ substring$ "." * }
+        { duplicate$
+          #-1 #2 substring$ ", " =
+            { #-3 global.max$ substring$ "." * }
+            { duplicate$
+              #-1 #2 substring$ ",'" =
+                { #-3 global.max$ substring$ ".'" * }
+                { duplicate$
+                  #-1 #2 substring$ ".'" =
+                    { #-3 global.max$ substring$ ".'" * }
+                    { duplicate$
+                      #-1 #2 substring$ ".~" =
+                        { #-3 global.max$ substring$ ".~" * }
+                        { duplicate$
+                          #-1 #2 substring$ ",~" =
+                            { #-3 global.max$ substring$ ".~" * }
+                            { duplicate$
+                              #-1 #3 substring$ ",''" =
+                                { #-4 global.max$ substring$ ".''" * }
+                                { duplicate$
+                                  #-1 #3 substring$ ".''" =
+                                    { #-4 global.max$ substring$ ".''" * }
+                                    { add.period$ }
+                                  if$
+                                }
+                              if$
+                            }
+                          if$
+                        }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {output.nonnull}
+{ 's :=
+  % mid.sentence
+  output.state mid.sentence =
+    { ", " * write$ }
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period.x " " * write$ }
+          if$
+        }
+      if$
+      % not mid.sentence, set to mid.sentence
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+
+%%% If the last character is period or comma, set non-zero to
+%%% last.period.comma.
+FUNCTION {period.comma.p}
+{ duplicate$ 't :=
+  t #-1 #1 substring$ "." = 
+  t #-1 #1 substring$ "," = or
+  t #-1 #1 substring$ ":" = or 
+  t #-1 #2 substring$ ".'" = or
+  t #-1 #2 substring$ ",'" = or
+  t #-1 #3 substring$ ".''" = or
+  t #-1 #3 substring$ ",''" = or
+  t #-1 #2 substring$ ".~" = or
+  t #-1 #2 substring$ ",~" = or
+    { #1 'last.period.comma := }
+    { #0 'last.period.comma := }
+  if$
+}
+
+%%% remove unnecessary comma.
+FUNCTION {remove.pre.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #1 #1 substring$ "," = 
+       { s #2 global.max$ substring$ }
+       { s #1 #1 substring$ "." = 
+          { s #2 global.max$ substring$ }
+          's
+         if$
+       }
+      if$
+    }
+  if$
+}
+
+%%% output.nonnull.nocomma is the same as output.nonnull except that it does
+%%% not add commas even in mid.sentence.
+FUNCTION {output.nonnull.nocomma}
+{ 's :=
+  output.state mid.sentence =
+    % mid.sentence
+    { period.comma.p "" * write$ }
+
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  last.period.comma #0 =
+    { s }
+    { s remove.pre.comma }
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output}
+% { duplicate$ empty$
+%     'pop$
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.nocomma}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull.nocomma
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output.check}
+% { 't :=
+%   duplicate$ empty$
+%     { pop$ "empty " t * " in " * cite$ * warning$ }
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.check.nocomma}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull.nocomma
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Format in bbl file:
+
+% \harvarditem[Brezis et~al.]{Brezis, Krugman and
+%   Tsiddon}{1993}{brezis93:_leapf_inter_compet}
+% Brezis, Elise~S., Paul~R. Krugman, and Daniel Tsiddon  (1993) ``Leapfrogging in
+%   International Competition: A Theory of Cycles in National Technological
+%   Leadership.'', {\em American Economic Review.}, Vol.~83. No.~5. pp.
+%   1211--1219.
+
+% \harvarditem[abbreviated citation]{full citation}{year}{keyword} ...
+
+%%% Add period and newline.
+FUNCTION {fin.entry}
+{ add.period.x
+  write$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+
+FUNCTION {new.block.check}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+
+%%% booktitle
+FUNCTION {format.btitle}
+{ booktitle empty$
+    { "" }
+    { bst.btitle.pre booktitle * bst.btitle.post * }
+  if$
+}
+
+FUNCTION {journal.name.sub}
+{ 't :=
+  t #1 #4 substring$ "The " =
+    % Use #30 to handle with the long journal name.
+    { t #5 #30 substring$ 't := }
+    'skip$
+  if$
+  t
+}
+
+FUNCTION {format.journal.name.abb}
+{ journal 's :=
+  journal 'jname :=
+  s journal.name.sub 's :=
+  bst.journal.name.abb #0 =
+    'skip$
+    { 
+       s "Academic Management Review" =
+        { "Acad. Manage. J." 'jname := }
+        'skip$
+      if$
+    }
+  if$
+  jname
+}
+
+%%% journal
+FUNCTION {format.journal}
+{ journal empty$
+    { "" }
+    { bst.journal.pre format.journal.name.abb * bst.journal.post * }
+  if$
+}
+
+%%% title for book
+FUNCTION {format.book}
+{ title empty$
+    { "" }
+    { bst.book.pre title * bst.book.post * }
+  if$
+}
+
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+    { type$ "online" = bst.show.url or
+        { bst.url.pre url * bst.url.post *
+          access empty$
+             { "" * }
+             { bst.access.pre * access * bst.access.post * }
+          if$
+        }
+        { "" }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.doi}
+{ doi empty$ bst.show.doi not or
+    { "" }
+    { bst.doi.pre doi * bst.doi.post * }
+  if$
+}
+
+FUNCTION {format.url.doi}
+{ url empty$
+    { format.doi }
+    { doi empty$
+        { format.url }
+        { bst.url.doi #0 =
+            { format.url output.nocomma
+              format.doi }
+            { bst.url.doi #1 =
+                { format.url } 
+                { format.doi }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% and others
+FUNCTION {bst.and.others.output}
+{ nameorder.temp "random" =
+  bst.use.nameorder #0 = not and
+    { bst.and.others.nameorder }
+    { bst.and.others }
+  if$
+}
+
+%%% author and editor
+
+%%% name
+FUNCTION {format.names}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+
+  { nameptr #1 =
+      % First author
+      { bst.author.name #0 =
+        bst.author.name #1 =
+        or
+           { bst.first.name.initial #0 = 
+            { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+            { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+           if$
+         }
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+           if$
+         }
+        if$
+      }
+      % The second or later authors
+      { bst.author.name #0 =
+        bst.author.name #2 =
+        or
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+             if$
+           }
+           { bst.first.name.initial #0 = 
+                { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+                { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+             if$
+           }
+        if$
+      }
+    if$
+    
+    nameptr #1 >
+      % The second or later authors
+      { numnames bst.max.author.num >
+          { bst.and.others * 
+            #1 'namesleft :=  }
+          { nameorder.temp "random" =
+            bst.use.nameorder #0 = not and
+              { bst.and.nameorder * t * }
+              { namesleft #1 >
+                  % More than one authors left
+                  { ", " * t * }
+                  % Only one author left
+                  { t "others" =
+                      { bst.and.others.output * }
+                      { numnames #2 =
+                          % Entry with two authors
+                          { bst.and * t * }
+                          { bst.ands * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% remove successive periods (commas) from author
+FUNCTION {remove.ss.period.auth}
+{ 's :=
+  s format.names 'tempa :=
+  bst.author.post 'tempb :=
+  tempb #1 #1 substring$ "}" =
+    { tempa tempb * }
+    { tempa #-1 #1 substring$ tempb #1 #1 substring$ = 
+        { tempa tempb #2 global.max$ substring$ * }
+        { tempa tempb * }
+      if$
+    }
+  if$
+}
+
+% <prev name list> <new name list> compare.names <modified name list>
+FUNCTION {compare.names.aer}
+{ 's :=
+  'tempa :=
+
+%   "current.author = " s * "\\" * write$ newline$
+%   "prev.author = " tempa * "\\" * write$ newline$
+
+  tempa num.names$ 'len1.aer :=  % len1 = the number of previous authors
+  s num.names$ 'len2.aer :=         % len2 = the number of current authors
+
+% len1.aer := min(len1.aer,len2.aer)
+% len1 -> min{ the number of previous authors, the number of current authors }
+  len1.aer len2.aer >
+    { len2.aer 'len1.aer := }
+    { }
+  if$
+
+% start with an empty string, then while the components are the same
+% add "\bysame"
+  ""
+  #1 'i.aer :=
+
+  { i.aer len1.aer > not }
+    { tempa i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      =
+        { #1 i.aer <
+            { " and " * }       % \bysame �ŏȗ����钘�҂̑O�ɂ‚� and 
+            { }
+          if$
+          "\bysame{}" *
+          i.aer #1 + 'i.aer := } 
+        { #-1 'len1.aer := }
+      if$
+    }
+  while$
+
+% add the rest of the second string
+  { i.aer len2.aer > not }
+    { #1 i.aer <
+        { " and " * }
+        { }
+      if$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$ *
+      i.aer #1 + 'i.aer :=
+    }
+  while$
+}
+
+%%% author
+FUNCTION {format.authors}
+{ author empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer author compare.names.aer 's :=
+          author 'prev.author.aer := }
+        { author 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors}
+{ editor empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer editor compare.names.aer 's :=
+          editor 'prev.author.aer := }
+        { editor 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+      s num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.authors.alt}
+{ author empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        {"\bysame "}
+        { bst.author.pre author remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors.alt}
+{ editor empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre editor remove.ss.period.auth * }
+      if$
+      editor num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+%%% format.in.ed.booktitle
+FUNCTION {format.editors.x}
+{ editor empty$
+    { "" }
+    { bst.editor.btitle.order #0 =
+        { "" }
+        { editor num.names$ #1 >
+           { " edited by " }
+           { " edited by " }
+%            { bst.editors " by " * }
+%            { bst.editor  " by " * }
+          if$
+        }
+      if$
+      editor format.names *
+      bst.editor.btitle.order #0 =
+        { editor num.names$ #1 >
+           { bst.editors * }
+           { bst.editor * }
+          if$
+        }
+        { "" * }
+      if$
+    }
+  if$
+}
+
+%%% Remove commas in the cases like "?." and "?,".
+FUNCTION {remove.irrelevant.period.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #-1 #3 substring$ "?,'" =
+      s #-1 #3 substring$ "?.'" = or
+        { s #-3 global.max$ substring$ "'" * }
+        { s #-1 #4 substring$ "?,''" =
+          s #-1 #4 substring$ "?.''" = or
+            { s #-4 global.max$ substring$ "''" * }
+            { s #-1 #2 substring$ "?," =
+              s #-1 #2 substring$ "?." = or
+                { s #-2 global.max$ substring$ "" * }
+                { s #-1 #3 substring$ "?,~" =
+                  s #-1 #3 substring$ "?.~" = or
+                    { s #-4 global.max$ substring$ "?~" * }
+                    's
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% title
+FUNCTION {format.title.sub}
+{ bst.title.lower.case #0 =
+     { bst.title.pre title * bst.title.post * }
+     { bst.title.pre title "t" change.case$ * bst.title.post * }
+  if$
+}
+
+%%% title
+FUNCTION {format.title}
+{ title empty$
+  bst.hide.title #0 = not or
+    { "" }
+    { format.title.sub remove.irrelevant.period.comma }
+  if$
+}
+
+%%% title for misc.
+FUNCTION {format.misc.title}
+{ title empty$
+    { "" }
+    { bst.title.pre title * bst.title.post * }
+  if$
+}
+
+% Convert "-" to "--" (for pages field)
+FUNCTION {n.dashify}
+{ 't :=
+  ""
+  %% while$
+  { t empty$ not }
+  { t #1 #1 substring$ "-" =
+      { t #1 #2 substring$ "--" = not
+          { "--" *
+            t #2 global.max$ substring$ 't :=
+          }
+          { { t #1 #1 substring$ "-" = }
+            { "-" *
+              t #2 global.max$ substring$ 't :=
+            }
+            while$
+          }
+        if$
+      }
+      { t #1 #1 substring$ *
+       t #2 global.max$ substring$ 't :=
+      }
+    if$
+  }
+  while$
+}
+
+%%% year
+FUNCTION {format.year}
+{ year empty$
+    { "there's no year in " cite$ * warning$
+      ", " }
+    { type$ "article" =
+        { bst.year.pre year * extra.label * bst.year.post * }
+        { bst.year.na.pre year * extra.label * bst.year.na.post * }
+      if$
+    }
+  if$
+}
+
+%%% page for book
+FUNCTION {format.book.pages}
+{ pages empty$
+    { "" }
+    { bst.pages.pre pages * bst.pages.post * }
+  if$
+}
+
+%%% Attach tie for the string with two or less characters.
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+    { "~" }
+    { " " }
+  if$
+  swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+
+%%% volume for book
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+%     { bst.volume.pre volume * bst.volume.post *
+    { " Volume " volume * "." *
+      series empty$
+        'skip$
+        %% If there is series field
+        { " of " * series * bst.series.post * }
+      if$
+%       "volume and number" number either.or.check
+    }
+  if$
+}
+
+%%% series
+FUNCTION {output.series}
+{ series empty$
+    { "" }
+    { bst.series.pre series * bst.series.post * }
+ if$
+}
+
+%%% number and series
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+      bst.hide.month #0 = not or
+        % number is empty
+        { series empty$
+            { "" }
+            % series is not empty.
+            { output.series }
+          if$
+        }
+        % number is not empty$
+        { series empty$
+            { bst.number.pre number * bst.number.post * }
+            % series is not empty.
+            { bst.in bst.series.pre * series * bst.series.post *
+              bst.number.pre * number * bst.number.post * }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+%%% Number or not.
+FUNCTION {is.num}
+{ chr.to.int$
+  duplicate$ "0" chr.to.int$ < not
+  swap$ "9" chr.to.int$ > not and
+}
+
+FUNCTION {extract.num}
+{ duplicate$ 't :=
+  "" 's :=
+  { t empty$ not }
+  { t #1 #1 substring$
+    t #2 global.max$ substring$ 't :=
+    duplicate$ is.num
+      { s swap$ * 's := }
+      { pop$ "" 't := }
+    if$
+  }
+  while$
+  s empty$
+    'skip$
+    { pop$ s }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%      edition
+
+% Convert edition to 1st, 2nd, 3rd, 4th etc
+FUNCTION {eng.ord}
+{ duplicate$ "1" swap$ *
+  #-2 #1 substring$ "1" =
+     { bst.th * }
+     { duplicate$ #-1 #1 substring$
+       duplicate$ "1" =
+         { pop$ bst.st * }
+         { duplicate$ "2" =
+             { pop$ bst.nd * }
+             { "3" =
+                 { bst.rd * }
+                 { bst.th * }
+               if$
+             }
+           if$
+          }
+       if$
+     }
+   if$
+}
+
+% Convert first, second etc in edition field to 1st, 2nd (from jfm.bst)
+FUNCTION {convert.edition}
+{ edition extract.num "l" change.case$ 's :=
+  s "first" = s "1" = or
+    { bst.first }
+    { s "second" = s "2" = or
+        { bst.second }
+        { s "third" = s "3" = or
+            { bst.third }
+            { s "fourth" = s "4" = or
+                { bst.fourth }
+                { s "fifth" = s "5" = or
+                    { bst.fifth }
+                    { s #1 #1 substring$ is.num
+                        { s eng.ord }
+                        { edition }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% edition
+FUNCTION {format.edition}
+{ edition empty$
+    { "" }
+    { output.state mid.sentence =
+        { bst.edition.pre convert.edition "l" change.case$ * bst.edition.post * }
+        { bst.edition.pre convert.edition "t" change.case$ * bst.edition.post * }
+      if$
+    }
+  if$
+}
+
+%%% month
+FUNCTION {format.month}
+{ month empty$
+  bst.hide.month #0 = not or
+    { "" }
+    { bst.month.pre month * bst.month.post * }
+  if$
+}
+
+%%% year and month
+FUNCTION {format.date}
+{ format.month format.year *
+}
+
+%%% Is multiple pages like 1-100?
+FUNCTION { multi.page.check }
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+
+%%% pages
+FUNCTION {format.pages}
+{ pages empty$
+    { "" }
+    { pages multi.page.check
+      { bst.pages.pre pages n.dashify tie.or.space.connect * bst.pages.post }
+      { bst.page.pre pages tie.or.space.connect * bst.page.post }
+     if$
+    }
+ if$
+}
+
+%%% number
+FUNCTION {format.number}
+{ number empty$
+  bst.hide.number #0 = not or
+    { "" }
+    { bst.number.pre number * bst.number.post * }
+  if$
+}
+
+%%% volume
+FUNCTION {format.volume}
+{ volume empty$
+    'skip$
+    { bst.volume.pre volume * bst.volume.post *
+      bst.year.position #3 =
+        { format.year * }
+        'skip$
+      if$
+    }
+  if$
+}
+
+%%% number, page
+FUNCTION {format.number.pages}
+{ number empty$
+    { format.pages }
+    { format.number format.pages * }
+  if$
+}
+
+%%% volume, page
+FUNCTION {format.volume.pages}
+{ volume empty$
+    { format.pages }
+    { format.volume format.pages * }
+  if$
+}
+
+%%% volume, number, page
+FUNCTION {format.volume.number.pages}
+{ volume empty$
+    { number empty$
+        { format.pages }
+        { format.number format.pages * }
+      if$
+    }
+    { number empty$
+        { format.volume format.pages * }
+        { format.volume format.number * format.pages * }
+      if$
+    }
+  if$
+}
+
+% volume, number, page
+FUNCTION {format.vol.num.pages}
+{ volume empty$
+    %% volume is empty.
+    { number empty$
+        %% number is empty.
+        { pages empty$
+            % warning
+            { "there is no volume, number, and pages in " cite$ * warning$ "" } 
+            { "" format.pages * }
+         if$
+        }
+        %% number is not empty.
+        % warning
+        { "there's a number but no volume in " cite$ * warning$
+          format.number.pages }
+     if$
+    }
+    %% volume is not empty.
+    { number empty$
+        %% number is empty.
+        { format.volume.pages }
+        %% number is not empty.
+        { format.volume.number.pages }
+     if$
+    }
+  if$
+}
+
+%%% chapter
+FUNCTION {format.chapter}
+{ chapter empty$
+    { "" }
+    { type empty$
+        { bst.chapter.pre chapter tie.or.space.connect * bst.chapter.post }
+        { ", " * type " " * chapter * }
+      if$
+    }
+  if$
+}
+
+%%% chapter, pages
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    { pages empty$
+        { "" }
+        { "" format.pages * }
+      if$
+    }
+    { pages empty$
+        { "" format.chapter * }
+        { "" format.chapter * format.pages * }
+      if$
+    }
+  if$
+}
+
+%%% editor and booktitle
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+    { "" }
+    { editor empty$
+        { bst.in format.btitle * }
+        { bst.editor.btitle.order #0 =
+            { bst.in format.editors.x * " " * format.btitle * }
+            { bst.in format.btitle * " " * format.editors.x * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% howpublished
+FUNCTION {format.howpublished}
+{ howpublished empty$
+    { "" }
+    { bst.howpublished.pre howpublished * bst.howpublished.post * }
+  if$
+}
+
+%%% address
+FUNCTION {format.address}
+{ address empty$
+    { "" }
+    { bst.address.pre address * bst.address.post * }
+  if$
+}
+
+%%% publisher
+FUNCTION {format.publisher}
+{ publisher empty$
+    { "" }
+    { address empty$
+        { ", " publisher * bst.publisher.post * }
+        { bst.publisher.pre publisher * bst.publisher.post * }
+      if$
+    }
+  if$
+}
+
+%%% organization
+FUNCTION {format.organization}
+{ organization empty$
+    { "" }
+    { bst.organization.pre organization * bst.organization.post * }
+  if$
+}
+
+%% publisher and address
+FUNCTION {output.publisher.address}
+{ address empty$
+    { format.publisher "publisher" output.check.nocomma }
+    { bst.address.position #0 = 
+        { format.address output.nocomma
+          format.publisher "publisher" output.check.nocomma }
+        { format.publisher "publisher" output.check.nocomma
+          format.address output.nocomma }
+      if$
+    }
+  if$
+}
+
+%% address, organization, publisher
+FUNCTION {output.address.organization.publisher}
+{ address empty$
+    %% address is empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            'skip$
+            { format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            { format.organization "organization" output.check.nocomma }
+            { format.organization "organization" output.check.nocomma
+              format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+     if$
+    }
+    %% address is not empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            %% publisher is empty
+            { format.address output.nocomma }
+            %% publisher is not empty
+            { bst.address.position #0 =
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            %% publisher is empty
+            { format.organization "organization" output.check.nocomma
+              format.address output.nocomma }
+            %% publisher is not empty
+            { format.organization "organization" output.check.nocomma
+              bst.address.position #0 = 
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+     if$
+    }
+  if$
+}
+
+%%% misc
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+    'skip$
+    { pop$ " " type * }
+  if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+    { bst.techrep }
+    { " " type * }
+  if$
+  number empty$
+    { "t" change.case$ }
+    { number tie.or.space.connect }
+  if$
+}
+
+%%% phdthesis
+FUNCTION {format.phd}
+{ bst.phdthesis }
+
+%%% mastersthesis
+FUNCTION {format.mthesis}
+{ bst.mthesis }
+
+%%% school
+FUNCTION {format.school}
+{ school empty$
+    { "" }
+    { bst.school.pre school * bst.school.post * }
+  if$
+}
+
+%%% institution
+FUNCTION {format.institution}
+{ institution empty$
+    { "" }
+    { bst.institution.pre institution * bst.institution.post * }
+  if$
+}
+
+%%% remove first ? characters.
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+
+FUNCTION {format.note}
+{ note empty$
+    { "" }
+    { bst.note.pre note * bst.note.post * }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        \havarditem
+
+FUNCTION {output.bibitem}
+{ newline$
+  "\harvarditem[" write$
+  alabel write$                 % alabel <- abbreviated citation
+  "]{" write$
+  flabel write$                 % flabel <- full citation
+  "}{" write$
+  cyear write$
+  % cyear = year
+  "}{" write$
+  cite$ write$                  % cite$ -> pusch keyword
+  "}" write$
+  % If number index is on
+  bst.use.number.index #0 =
+     'skip$
+     { index #1 + 'index :=
+       "" 'preone :=
+       "" 'preten :=
+       bst.number.index.digit "1" =
+         'skip$
+         { bst.number.index.digit "2" =
+           { "\hskip0.5em" 'preone := }
+           { bst.number.index.digit "3" =
+              { "\hskip1em" 'preone :=
+                "\hskip0.5em" 'preten := }
+              'skip$
+             if$
+           }
+         if$
+         }
+       if$  
+     }
+  if$
+  newline$
+  before.all 'output.state :=
+  ""
+  % number index
+  bst.use.number.index #0 =
+     'skip$
+     { index #10 <
+         % Insert spaces according to digit of number index.
+         { preone }
+         { index #100 <
+             { preten }
+             { "" }
+           if$
+         }
+       if$
+       bst.number.index.pre * index int.to.str$ * bst.number.index.post * write$
+     }
+ if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        article
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.journal "journal" output.check.nocomma
+  bst.year.position #2 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+  format.vol.num.pages output.nocomma
+
+  bst.year.position #1 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        book
+
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check 
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  format.edition output.nocomma
+  format.book.pages output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        booklet
+
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output.nocomma
+  format.year output.nocomma
+  format.misc.title "title" output.check.nocomma
+  format.howpublished output.nocomma
+  format.address output.nocomma
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inbook
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+%   format.book remove.pre.comma "title" output.check.nocomma
+  format.book "title" output.check.nocomma
+  format.edition output.nocomma
+
+  format.bvolume output.nocomma
+  format.chapter.pages "chapter and pages" output.check.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       incollection
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.edition output.nocomma
+  format.chapter.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inproceedings
+
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  format.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       conference
+
+FUNCTION {conference}
+{ inproceedings }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       manual
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization empty$
+        'skip$
+        { organization output.nonnull.nocomma
+          address output.nocomma
+        }
+      if$
+    }
+    { format.authors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  author empty$
+    { organization empty$
+        { format.address new.block.check
+          format.address output.nocomma
+        }
+        'skip$
+      if$
+    }
+    { output.address.organization.publisher }
+  if$
+  format.edition output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       mastersthesis
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.mthesis format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       misc
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Online
+
+FUNCTION {online}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       phdthesis
+
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  format.phd
+  format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  address empty$
+    'skip$
+    { format.address output.nocomma }
+  if$
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       proceedings
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization output.nocomma }
+    { format.editors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.btitle remove.pre.comma "title" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       techreport
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.tr.number output.nonnull.nocomma
+  format.institution "institution" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       unpublished
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  bst.year.position #0 = not
+    { format.date remove.pre.comma output.nocomma }
+    { month empty$
+        'skip$
+        { format.month remove.pre.comma output.nocomma }
+      if$
+    }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note "note" output.check.nocomma
+  fin.entry
+}
+
+FUNCTION {default.type}
+{ misc }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Alias for month names:
+
+MACRO {jan} {"January"}
+MACRO {feb} {"February"}
+MACRO {mar} {"March"}
+MACRO {apr} {"April"}
+MACRO {may} {"May"}
+MACRO {jun} {"June"}
+MACRO {jul} {"July"}
+MACRO {aug} {"August"}
+MACRO {sep} {"September"}
+MACRO {oct} {"October"}
+MACRO {nov} {"November"}
+MACRO {dec} {"December"}
+
+%%% Read entries:
+READ
+
+%%% Variable for remembering the order of citation.
+INTEGERS { order.num }
+FUNCTION {initialize.order.num}
+{
+  #1 'order.num :=
+}
+%%% Initialize a variables
+EXECUTE {initialize.order.num}
+
+%%% Variable for remembering the order of citation.
+FUNCTION {set.order.cited}
+{
+  order.num 'order.cited :=
+  #1 order.num + 'order.num :=
+}
+%%% Iterate for all entries:
+ITERATE {set.order.cited}
+
+%%% check the value of nameorder field.
+FUNCTION {set.nameorder}
+{ nameorder empty$
+    { "" 'nameorder.temp := }
+    { nameorder 'nameorder.temp := }
+  if$
+}
+%%% Iterate for all entries:
+ITERATE {set.nameorder}
+
+%%% Remove symbols and convert to lowercase.
+FUNCTION {sortify}
+{ purify$ "l" change.case$ }
+
+%%% names for sorting
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { nameptr #1 >
+        { ", " * }
+        'skip$
+      if$
+      s nameptr "{ll}{ f}{ j}" format.name$ 't :=
+      nameptr numnames = t "others" = and
+        { bst.and.others.output *}
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.names.abb}
+{ 's :=
+  s num.names$ 'numnames :=
+  numnames bst.and.others.num <
+     { s sort.format.names }
+     { s #1 "{ll}{ f}{ j}" format.name$ " zz " * }
+  if$
+}
+
+%%% Label for full author name.
+FUNCTION {format.lab.names.full}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{vv~}{ll}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                  { bst.and.nameorder * t * }
+                  { ", " * t * }
+                if$
+              }
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 > 
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.ands * t * }
+                        if$
+                      }
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.and * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+  numnames #1 > #1 #2 = and {", eds" *} {} if$
+  numnames #1 = #1 #2 = and {", ed" *} {} if$
+}
+
+%%% laberl for abbreviated author name.
+FUNCTION {format.lab.names.abb}
+{ 's :=
+   s num.names$ 'numnames :=
+   numnames bst.and.others.num <
+     % if the number of authors is less than bst.and.others.num, full name.
+     { s format.lab.names.full }
+     % if the number of authors is equal or more than bst.and.others.num, abbreviated name.
+     { s #1 "{ll}" format.name$ bst.and.others.output * }
+   if$
+}
+
+%%% abbreviated author
+FUNCTION {author.key.label.abb}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.key.label.full}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {format.names.full.wo.and}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{ll}{, ff}{, jj}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { " " * t * }
+              { t "others" =
+                  { " " * }
+                  { numnames #2 > 
+                      { " " * t * }
+                      { " " * t * }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+}
+
+FUNCTION {author.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.editor.key.full.wo.and}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.names.full.wo.and }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {editor.key.organization.key.full.wo.and}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.key.organization.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+%%% abbreviated author
+FUNCTION {author.editor.key.label.abb}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.abb }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.editor.key.label.full}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.full }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.full}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.abb}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.full}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.full }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.abb}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.abb }
+  if$
+}
+
+%%% Convert numbers: 0->9, 1->8, 2->7,..., 9->0
+FUNCTION {reverse.num}
+{ 's :=
+  s "1" =
+    { "8" 'year.num := }
+    { s "2" =
+        { "7" 'year.num := }
+        { s "3" =
+            { "6" 'year.num := }
+            { s "4" =
+                { "5" 'year.num := }
+                { s "5" =
+                    { "4" 'year.num := }
+                    { s "6" =
+                        { "3" 'year.num := }
+                        { s "7" =
+                            { "2" 'year.num := }
+                            { s "8" =
+                                { "1" 'year.num := }
+                                { s "9" =
+                                    { "0" 'year.num := }
+                                    { s "0" =
+                                        { "9" 'year.num := }
+                                        { "9" 'year.num := }
+                                    if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+  year.num
+}
+
+%%% Convert year (large number -> small number)
+FUNCTION {convert.year}
+{ 't := 
+  bst.reverse.year #0 =
+    { t 'tt := }
+    { t #1 #1 substring$ reverse.num 
+      t #2 #1 substring$ reverse.num *
+      t #3 #1 substring$ reverse.num *
+      t #4 #1 substring$ reverse.num * 'tt := }
+  if$
+  tt
+}
+
+%%% cyear
+FUNCTION {calc.cyear}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.full.wo.and
+    { type$ "proceedings" =
+        'editor.key.organization.key.full.wo.and
+        { type$ "manual" =
+            'author.key.organization.key.full.wo.and
+            'author.key.full.wo.and
+          if$
+        }
+      if$
+    }
+  if$
+  duplicate$
+  year empty$
+    { "2199" 'cyear := }
+    { year 'cyear := }
+  if$
+  year empty$
+    { " " "2199" convert.year * field.or.null * }
+    { " " year convert.year * field.or.null * }
+  if$
+  sortify 'sort.label :=
+  % For debug
+  econ.debug #0 = not
+    { "sort.label = ``\texttt{" write$
+      sort.label write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+ pop$
+}
+
+FUNCTION {calc.sort.label.abb}
+{ author empty$
+    { editor empty$
+       { "" }
+       { editor 's := }
+      if$
+    }
+    { author 's := }
+  if$
+  s sort.format.names.abb 't :=
+  year empty$
+    { t sortify " " * "2199" convert.year * 'sort.label.abb := }
+    { t sortify " " * year convert.year * 'sort.label.abb := }
+  if$
+  econ.debug #0 = not
+    { "sort.label.abb = ``\texttt{" write$
+      sort.label.abb write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+  if$
+}
+
+%%% flabel
+FUNCTION {calc.flabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.full
+    { type$ "proceedings" =
+        'editor.key.organization.label.full
+        { type$ "manual" =
+            'author.key.organization.label.full
+            'author.key.label.full
+          if$
+        }
+      if$
+    }
+  if$
+  'flabel :=
+  author empty$
+    'skip$
+    { author num.names$ 'numnames :=
+      numnames bst.max.author.num >
+        { alabel 'flabel := }
+        'skip$
+      if$
+    }
+  if$
+  % For debug
+  econ.debug #0 = not
+    { "flabel = ``\texttt{" write$
+      flabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% alabel
+FUNCTION {calc.alabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.abb
+    { type$ "proceedings" =
+        'editor.key.organization.label.abb
+        { type$ "manual" =
+            'author.key.organization.label.abb
+            'author.key.label.abb
+          if$
+        }
+      if$
+    }
+  if$
+  'alabel :=
+  % For debug
+  econ.debug #0 = not
+    { "alabel = ``\texttt{" write$
+      alabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% title for sorting
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+
+%%% author for sorting
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+%%% editor for sorting
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+
+%%% 1,...,9 -> 001,...,009
+%%% 10,...,99 -> 010,...,099
+FUNCTION {add.zero.to.number}
+{ 's :=
+    s text.length$ #1 =
+      { "00" s * }
+      { s text.length$ #2 =
+          { "0" s * }
+          { s }
+        if$
+      }
+   if$
+}
+
+%% entry type
+FUNCTION {bst.sort.entry.type.order}
+{ 'item.type :=
+  item.type "article" =
+    { "01" }
+    { item.type "book" =
+        { "02" }
+        { item.type "booklet" =
+            { "03" }
+            { item.type "comment" =
+                { "04" }
+                { item.type "conference" =
+                    { "05" }
+                    { item.type "inbook" =
+                        { "06" }
+                        { item.type "incollection" =
+                            { "07" }
+                            { item.type "inproceedings" =
+                                { "08" }
+                                { item.type "manual" =
+                                    { "09" }
+                                    { item.type "masterthesis" =
+                                        { "10" }
+                                        { item.type "misc" =
+                                           { "11" }
+                                           { item.type "phdthesis" =
+                                              { "12" }
+                                              { item.type "proceedings" =
+                                                 { "13" }
+                                                 { item.type "techreport" =
+                                                    { "14" }
+                                                    { item.type "unpublished" =
+                                                       { "15" }
+                                                       { "16" }
+                                                      if$
+                                                    }
+                                                   if$
+                                                 }
+                                                if$
+                                              }
+                                             if$
+                                           }
+                                          if$
+                                        }
+                                      if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+}
+
+%%% Create sort.key$: absorder -> author -> year -> order -> month -> title.
+FUNCTION {presort.one}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " *
+  sort.label.abb *
+  " " *  
+  type$ "book" = type$ "inbook" = or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  * " " *
+  " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " * sort.label * " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% Codes for debugging
+FUNCTION {calc.alabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.alabel: alabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {calc.flabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.flabel: flabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {presort.one.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (1st time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (2nd time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.cyear.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.cyear: sort.label = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.sort.label.abb.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.sort.label.abb: sort.label.abb = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+%%% alabel
+EXECUTE {calc.alabel.mess}
+ITERATE {calc.alabel}
+
+%%% flabel
+EXECUTE {calc.flabel.mess}
+ITERATE {calc.flabel}
+
+%%% cyear and sort.label
+EXECUTE {calc.cyear.mess}
+ITERATE {calc.cyear}
+
+%%%
+EXECUTE {calc.sort.label.abb.mess}
+ITERATE {calc.sort.label.abb}
+
+%%% Sorting by $sort.key (first time)
+%
+% Sorting is done in two times. This is the first time.
+%
+EXECUTE {presort.one.mess}
+ITERATE {presort.one}
+SORT
+
+FUNCTION {forward.pass}
+{ bst.use.bysame #0 = bst.use.bysame #2 = or
+    % Not use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+    }
+    % Use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+      author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+      if$
+      'this.author :=
+      % format.names 'this.author :=
+      this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {reverse.pass}
+{ next.extra "b" =
+    { "a" 'extra.label := }
+    'skip$
+  if$
+  extra.label empty$ not
+    { cyear extra.label * }
+    { cyear "" * }
+  if$
+  "" field.or.null *
+  'cyear :=
+  extra.label 'next.extra :=
+}
+
+%%% \bysame
+ITERATE {forward.pass}
+
+REVERSE {reverse.pass}
+
+%%% Sorting by sort.key$ (second time)
+EXECUTE {presort.two.mess}
+ITERATE {presort.two}
+SORT
+
+FUNCTION {reset.prev.author}
+{ "xxyyzz" 'prev.author := }
+
+EXECUTE {reset.prev.author}
+
+FUNCTION {forward.pass.two}
+{ bst.use.bysame #1 = 
+    { author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+     if$
+     'this.author :=
+     this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+     if$
+    }
+   'skip$
+  if$
+}
+
+ITERATE {forward.pass.two}
+
+FUNCTION{punctuation}
+{
+  "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%"  write$ newline$
+  "%  This bbl file is created by aea.bst ver." econ.version *          write$ newline$
+  "%  The latest aea.bst is available at"                               write$ newline$
+  "%  <https://github.com/ShiroTakeda/econ-bst>"                         write$ newline$ newline$
+}
+
+EXECUTE {punctuation}
+
+FUNCTION {begin.bib}
+{
+  preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  bst.use.bysame #0 =
+     % Not use \bysame.
+     'skip$
+     % Use \bysame.
+     { "%%% Definition of \bysame" write$ newline$
+       "\ifx\undefined\bysame" write$ newline$
+       "\newcommand{\bysame}{" bst.bysame.definition * "}" *
+       write$ newline$
+       "\fi" write$ newline$ newline$ }
+  if$
+  %% When number index is attached to the beginning of each item.
+  bst.use.number.index #0 =
+     'skip$
+     { bst.number.index.digit "1" =
+         % one digit.
+         { bst.number.index.bibhang.one }
+         { bst.number.index.digit "2" =
+            % two digits.
+            { bst.number.index.bibhang.ten }
+            % three or more digits.
+            { bst.number.index.bibhang.hund }
+           if$
+         }
+       if$
+       'hang :=
+       "%%% Redefinition of \bibhang" write$ newline$
+       "\ifx\undefined\bibhang" write$ newline$
+       "\relax" write$ newline$
+       "\else" write$ newline$
+       "\setlength{\bibhang}{"
+       hang * "}" * write$ newline$ 
+       "\fi" write$ newline$ newline$
+       }
+  if$
+  "\begin{thebibliography}{xxx}" write$ newline$
+
+  %% Initialize the variable `index'.
+  #0 'index :=
+}
+
+FUNCTION {end.bib}
+{ newline$ "\end{thebibliography}" write$ newline$ }
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+EXECUTE {end.bib}
+
+%  --------------------
+%  Local Variables:
+%  fill-column: 78
+%  mode: bst
+%  End:
diff --git a/Master/texmf-dist/bibtex/bst/econ-bst/econ-b.bst b/Master/texmf-dist/bibtex/bst/econ-bst/econ-b.bst
new file mode 100644
index 00000000000..2e668eb9e04
--- /dev/null
+++ b/Master/texmf-dist/bibtex/bst/econ-bst/econ-b.bst
@@ -0,0 +1,3601 @@
+%% econ.bst: BibTeX style file for papers in economics.
+%
+% Author: Shiro Takeda
+% Maintainer: Shiro Takeda
+% Copyright (C) 2001-2018 Shiro Takeda
+% First-written:       <2007/07/28>
+% Version: 2.7
+% Keywords: TeX, BibTeX, bst 
+% URL: https://github.com/ShiroTakeda/econ-bst
+
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% The Current Maintainer of this work is Shiro Takeda.
+
+%% Main features of econ.bst.
+
+% "econ.bst" is a BibTeX style file for economics. It provids the following
+% features:
+
+% 1) The author-year type citation (you need "natbib.sty" as well).
+% 2) Reference style used in economics papers ("econ.bst" is not a BibTeX style
+%    for a specific journal).
+% 3) Highly customizable.  You can easily customize reference style as you wish.
+% 4) You can use "certified random order" proposed by Ray ⓡ Robson (2018)
+%    (http://dx.doi.org/10.1257/aer.20161492).
+
+% Bug reports, requests and suggestions are welcome. 
+
+% For changelogs, see CHANGES.txt file.
+
+% version number
+FUNCTION {econ.version} { "2.7" }
+
+% File name
+FUNCTION {econ.file} { "econ.bst" }
+
+% Debug mode. Non-zero makes debug mode on.
+FUNCTION {econ.debug}
+{ #0 }    % Debug mode off (default).
+% { #1 }    % Debug mode on.
+
+ENTRY
+  %%% Declaration of field
+  { access address author booktitle chapter doi edition editor howpublished
+    institution journal key month note number organization pages publisher
+    school series title type url volume year
+  % Fields specific to econ.bst
+    order absorder nameorder
+  }
+
+  % Definition of entry variable.  The entry variable is a variable which has
+  % different values according to different entries.
+  %% Integer entry variable:
+  { order.cited }
+
+  %% String entry variable
+  { label cyear flabel alabel extra.label sort.label sort.label.abb
+    extra.label.bysame nameorder.temp jname }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Use \bysame or not.
+%
+% If set to #0, \bysame is not used.
+% If set to #1, \bysame is used 
+% If set to #2, \bysame is used (alternative abbreviation style).
+%
+% Note that integer number is expressed as # + integer in bst file.
+% \bysame is the function that abbreviates succession of the same authors' name by ---.
+%
+% See econ-sample.pdf for details.
+% 
+FUNCTION {bst.use.bysame}
+% { #0 }    % Not use \bysame
+% { #1 }    % -> Use \bysame (default)
+{ #2 }    % -> Use \bysame of alternative style.
+
+% The definition of \bysame command.
+%
+FUNCTION {bst.bysame.definition}
+% { "\hskip.3em \leavevmode\rule[.5ex]{3em}{.3pt}\hskip0.5em" } % (default)
+{ "\leavevmode\hbox to\leftmargin{\hrulefill\,\,}" } % If you set #2 to bst.use.bysame, use this.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% The order of fist and last name.
+%
+FUNCTION {bst.author.name}
+{ #0 }    % (default)
+% { #1 }
+% { #2 }
+
+% Case of #0: First author -> last-first, other authors -> first-last. 
+% Fujita, Masahisa, Paul R. Krugman, and Anthony J. Venables. 
+
+% Case of #1: All authors -> last-first
+% Fujita, Masahisa, Krugman, Paul R., and Venables, Anthony J.
+
+% Case of #2: All authors -> first-last
+% Masahisa Fujita, Paul R. Krugman, and Anthony J. Venables.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Abbreviate first name of authors (editors):
+%
+FUNCTION {bst.first.name.initial}
+{ #0 }    % #0 -> full letters (default).
+% { #1 }    % Non-zero -> initial letter only.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Decapitalize of strings in title field.
+%
+FUNCTION {bst.title.lower.case}
+{ #0 }    % If #0, not decapitalize title (default).
+% { #1 }    % If non-#0, decapitalize title
+
+% Hide title filed.
+%
+FUNCTION {bst.hide.title}
+{ #0 }    % #0 -> Title field is displayed (default)
+% { #1 }    % Non-zer -> Title field is hidden 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide month.
+%
+FUNCTION {bst.hide.month}
+{ #0 }    % #0 -> show month field (default).
+% { #1 }    % non-#0 -> hide month field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Attach number index like plain.bst.
+%
+FUNCTION {bst.use.number.index}
+% { #0 }    % Not use number index (default).
+{ #1 }    % Non-#0 -> Use number index
+
+% The string before number index:
+%
+FUNCTION {bst.number.index.pre}
+{ "[" }    % (default)
+
+% The string after number index.  Adjustment is recommended.
+%
+FUNCTION {bst.number.index.post}
+{ "]\hskip1.0em " }    % (default)
+
+% Maximum digit of number index:
+% If the number of reference items >= 100, set 3 to this function.
+% If the number of reference items < 100, set 2 to this function.
+% If the number of reference items < 10, set 1 to this function.
+%
+FUNCTION {bst.number.index.digit}
+{ "2" }    % (default)
+% { "3" }
+
+% The functions below are used to adjust space and postion.  If you use fonts
+% other than computer modern fonts, you had better make adjustments.
+%
+% Setting for bst.number.index.digit = 1:
+FUNCTION {bst.number.index.bibhang.one}
+{ "2.19em" }
+% { "2.05em" }    % (default)
+% Setting for bst.number.index.digit = 2:
+FUNCTION {bst.number.index.bibhang.ten}
+{ "2.69em" }
+% { "2.55em" }    % (default)
+% Setting for bst.number.index.digit = 3:
+FUNCTION {bst.number.index.bibhang.hund}
+{ "3.19em" }
+% { "3.05em" }    % (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Position of "year":
+%
+% You can choose the position of year by this function.
+%
+% If set to #0, year is placed right after "author".
+% If set to non-zero, year is placed at the end (before note field) except for
+% aritcle type entry. 
+%
+% In article type entry, the position of year changes according to the
+% following rule:
+% 
+% #1 -> year is placed at the end.
+% #2 -> year is placed after journal name in aritcle type entry.
+% #3 -> year is placed after volume in aritcle type entry.
+%
+FUNCTION {bst.year.position}
+% { #0 }    % (default).
+{ #1 }    % Last place before note.
+% { #2 }    % After journal name for aticle type entry.
+% { #3 }    % After volume for aticle type entry.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If 0, references are sorted by old documents -> recent documents.  If
+% non-zero, reverse order.
+FUNCTION {bst.reverse.year}
+{ #0 }    % Normal order (old -> recent) (default).
+% { #1 }    % inverse order (recent -> old)
+
+% If non-zero, sort references by using year field as the primary key
+% (chronological sorting).
+FUNCTION {bst.sort.year}
+{ #0 }    % Normal case: year is used as the sorting key next to author (default).
+% { #1 }    % year is used as the primary sorting key.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If non-zero, references are listed in citation order.
+%
+FUNCTION {bst.no.sort}
+{ #0 }    % (default)
+% { #1 }    % listed in citation order.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Non-zero -> sort references by entry type (article, book, incollection etc.)
+%
+FUNCTION {bst.sort.entry.type}
+{ #0 }    % #0 -> Normal (not sort references by entry type) (default).
+% { #1 }    % Non-zero -> sort references by entry type.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use absorder field to sort items.  Otherwise, ignore absorder field.
+%
+FUNCTION {bst.notuse.absorder.field}
+{ #0 }    % #0 -> Use absorder (default).
+% { #1 }    % Non-#0 -> Not use absorder.
+%
+% Order of priority to sort items
+% 
+% absorder -> author -> year -> order -> month -> title
+%
+% wehre absorder and order fields are specific to econ.bst.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use order field to sort items.  Otherwise, ignore order field.
+% Note: order field is specific to econ.bst.
+FUNCTION {bst.notuse.order.field}
+{ #0 }    % #0 -> Use order field (default).
+% { #1 }    % Non-#0 -> not use order field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%     and
+
+%%% String used to separate author names in references.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.and}
+{ " \& " }
+% { " and " }    % (default)
+
+%%% String used to separate author names in references (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.ands}
+{ ", \& " }
+% { ", and " }    % (default)
+
+%%% String used to separate author names in citation part.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.cite.and}
+{ " \& " }
+% { " and " }    % (default)
+
+%%% String used to separate author names in citation part (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.cite.ands}
+{ " and " }    % (default)
+
+%%% If you want to use random author order for some bibliography entries, set
+% non-zero to this function.
+% 
+FUNCTION {bst.use.nameorder}
+{ #1 }	% Use random order (default)
+% { #0 }	% Not use random order
+
+%%% String used to separate author names in references for the entry of random
+% author order.
+%
+FUNCTION {bst.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+%%% String used to separate author names in citation part for the entry of
+% random author order
+%
+FUNCTION {bst.cite.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Author names in the citation part are abbreviated by et al. if the number of
+% authors is greater or equal to bst.and.others.num.
+FUNCTION {bst.and.others.num}
+% { #3 }    % If the number of authors is greater or equal to three (default).
+{ #4 }
+
+ If the number of authors is greater or equal to bst.max.author.num, only
+% first author is listed and other authors' names are abbreviated as "et al.".
+FUNCTION {bst.max.author.num}
+{ #12 }    % If the number of authors is greater or equal to 12 (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Strings used when abbreviating multiple-authors in citation part.
+FUNCTION {bst.and.others}
+{ " et~al." }    % (default)
+
+% Strings used when abbreviating multiple-authors in citation part for entries
+% with random author order.
+FUNCTION {bst.and.others.nameorder}
+{ " \textcircled{r}~al." }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       author 
+
+% The string before author:
+%
+FUNCTION {bst.author.pre}
+{ "\textsc{" }
+% { "" }    % (default)
+
+% The string after author:
+%
+FUNCTION {bst.author.post}
+{ "}, " }
+% { "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       year
+
+% The string before year only for aritcle type entry.
+%
+FUNCTION {bst.year.pre}
+{ ", \textit{" }
+% { " (" }    % (default)
+
+% The string after year only for aritcle type entry.
+%
+FUNCTION {bst.year.post}
+{ "}" }
+% { ") " }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.pre}
+{ ", \textit{" }
+% { " (" }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.post}
+{ "}" }
+% { ") " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       title (except for title in book)
+
+% The string before title:
+%
+FUNCTION {bst.title.pre}
+{ "`" }
+% { "``" }    % (default)
+
+% The string after title:
+%
+FUNCTION {bst.title.post}
+{ ".'" }
+% { ",''" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       tile for book:
+
+% The string before book title:
+%
+FUNCTION {bst.book.pre}
+{ " \textit{" }    % (default)
+
+% The string after book title:
+%
+FUNCTION {bst.book.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       booktitle
+
+% The string before booktitle:
+%
+FUNCTION {bst.btitle.pre}
+{ " \textit{" }    % (default)
+
+% The string after booktitle:
+%
+FUNCTION {bst.btitle.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       journal name
+
+% The string before journal name:
+%
+FUNCTION {bst.journal.pre}
+{ " \textit{" }    % (default)
+
+% The string after journal name:
+%
+FUNCTION {bst.journal.post}
+{ "}" }    % (default)
+
+% Use the abbreviated journal name
+%
+% If set to #0, do not use abbreviated journal name.
+% If set to non-#0, use abbreviated journal name.
+%
+FUNCTION {bst.journal.name.abb}
+{ #0 }    % (default)
+% { #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       editor notation:
+
+% The string that indicates multiple editors:
+%
+FUNCTION {bst.editors}
+{ " (eds.) " }
+% { " eds. " }    % (default)
+
+% The string that indicates single editor:
+%
+FUNCTION {bst.editor}
+{ " ed. " }    % (default)
+
+% Order of editor and booktitle in incollection and inproceedings entries.
+%
+% If set to #0:         editors -> booktitle order
+% If set to non-zero:   booktitle -> editors order
+%
+FUNCTION {bst.editor.btitle.order}
+{ #0 }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       edition
+
+% The string before edition:
+%
+FUNCTION {bst.edition.pre}
+{ ", " }    % (default)
+
+% The string after edition:
+%
+FUNCTION {bst.edition.post}
+{ " edition" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       volume
+
+% The string before volume:
+%
+FUNCTION {bst.volume.pre}
+{ ", \textbf{" }
+% { ", " }    % (default)
+
+% The string after volume:
+%
+FUNCTION {bst.volume.post}
+{ "}" }
+% { "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       number
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide number.  If non-zero, number is suppressed. 
+FUNCTION {bst.hide.number}
+{ #0 }    % #0 -> show number field (default)
+% { #1 }    % non-#0 -> Hide number field.
+
+% The string before number:
+%
+FUNCTION {bst.number.pre}
+{ " (" }    % (default)
+
+% The string after number:
+%
+FUNCTION {bst.number.post}
+{ ")" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       in 
+
+% In
+%
+FUNCTION {bst.in}
+{ " In " }
+% { " in " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       page
+
+% The string before page (multiple pages):
+%
+FUNCTION {bst.pages.pre}
+{ ", " }    % (default)
+
+% The string before page:
+%
+FUNCTION {bst.page.pre}
+{ ", " }    % (default)
+
+% The string after page (multiple pages):
+%
+FUNCTION {bst.pages.post}
+{ "" }    % (default)
+
+% The string after page:
+%
+FUNCTION {bst.page.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       chapter
+
+% The string before chapter:
+%
+FUNCTION {bst.chapter.pre}
+{ ", Chapter" }
+% { ", Chap." }    % (default)
+
+% The string after chapter:
+%
+FUNCTION {bst.chapter.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       month
+
+% The string before month:
+%
+FUNCTION {bst.month.pre}
+{ ", " }    % (default)
+
+% The string after month:
+%
+FUNCTION {bst.month.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       address
+% The string before address:
+%
+FUNCTION {bst.address.pre}
+{ ", " }    % (default)
+
+% The string after address:
+%
+FUNCTION {bst.address.post}
+{ "" }    % (default)
+
+% You can choose the order of address and publisher by this function.
+%
+% If #0,	address -> publisher order (the default value).
+% If non-zero,	publisher -> address order.
+
+FUNCTION {bst.address.position}
+{ #0 }    % Address is placed before publisher (default)
+% { #1 }    % Address is placed after publisher 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       publisher
+
+% The string before publisher:
+%
+FUNCTION {bst.publisher.pre}
+{ ": " }    % (default)
+
+% The string after publisher:
+%
+FUNCTION {bst.publisher.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       series
+
+% The string before series:
+%
+FUNCTION {bst.series.pre}
+{ ", " }    % (default)
+
+% The string after series:
+%
+FUNCTION {bst.series.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       organization
+
+% The string before organization:
+%
+FUNCTION {bst.organization.pre}
+{ ", " }    % (default)
+
+% The string after organization:
+%
+FUNCTION {bst.organization.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       school
+
+% The string before school:
+%
+FUNCTION {bst.school.pre}
+{ ", " }    % (default)
+
+% The string after school:
+%
+FUNCTION {bst.school.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       institution
+
+% The string before institution:
+%
+FUNCTION {bst.institution.pre}
+{ ", " }    % (default)
+
+% The string after institution:
+%
+FUNCTION {bst.institution.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       howpublished
+
+% The string before howpublished:
+%
+FUNCTION {bst.howpublished.pre}
+{ " " }    % (default)
+
+% The string after howpublished:
+%
+FUNCTION {bst.howpublished.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       url
+
+% Show or Hide url.  If non-zero, url is displayed. Otherwise, url is suppressed. 
+FUNCTION {bst.show.url}
+{ #1 }    % non-#0 -> Show url field (default)
+% { #0 }    % #0 -> Not show url field.
+
+% The string before url:
+%
+FUNCTION {bst.url.pre}
+{ ", \url{" }	% (default)
+
+% The string after url:
+%
+FUNCTION {bst.url.post}
+{ "}" }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Access
+
+% This setting is valid only if there are "access" field in bib
+% files. The value of access field indicates accessed date for URL.
+
+% The string before access.
+FUNCTION {bst.access.pre}
+% { ", accessed on " } % (default)
+{ " (accessed on " }
+
+% The string after access.
+FUNCTION {bst.access.post}
+% { "" }    % (default)
+{ ")" }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       DOI (digital object identifier)
+
+% This setting is valid only if there are "doi" field in bib files.
+
+% Show or Hide DOI.  If non-zero, DOI is displayed. Otherwise, DOI is suppressed. 
+FUNCTION {bst.show.doi}
+{ #1 }    % non-#0 -> Show DOI field (default)
+% { #0 }    % #0 -> Not show DOI field.
+
+% The string before DOI:
+%
+FUNCTION {bst.doi.pre}
+{ ", \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * } % (default)
+
+% The string after DOI:
+%
+FUNCTION {bst.doi.post}
+{ "}}" }	   % (default)
+
+% How to show URL and DOI fields when both fields exist.
+%
+% #0 -> Both fields are displayed
+% #1 -> Only URL field is displayed
+% #2 -> Only DOI field is displayed
+%
+FUNCTION {bst.url.doi}
+% { #0 }    % -> Both fields are displayed
+% { #1 }    % -> Only URL field is displayed
+{ #2 }    % (default) --> Only DOI field is displayed 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Other functions:
+
+% The string before note.
+FUNCTION {bst.note.pre}
+{ ", " }    % (default)
+
+% The string after note.
+FUNCTION {bst.note.post}
+{ "" }    % (default)
+
+% The string that represents Technical report:
+%
+FUNCTION {bst.techrep}
+{ "Technical Report" }    % (default)
+
+% The string that represents master thesis:
+%
+FUNCTION {bst.mthesis}
+{ " Master's thesis" }    % (default)
+
+% The string that represents phd thesis:
+%
+FUNCTION {bst.phdthesis}
+{ " Ph.D. dissertation" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization end here:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FUNCTION {bst.first}
+{ "1st" }
+
+FUNCTION {bst.second}
+{ "2nd" }
+
+FUNCTION {bst.third}
+{ "3rd" }
+
+FUNCTION {bst.fourth}
+{ "4th" }
+
+FUNCTION {bst.fifth}
+{ "5th" }
+
+FUNCTION {bst.st}
+{ "st" }
+
+FUNCTION {bst.nd}
+{ "nd" }
+
+FUNCTION {bst.rd}
+{ "rd" }
+
+FUNCTION {bst.th}
+{ "th" }
+
+%%%%% memo by Takeda
+
+% "a" 'b := indicates substituting string "a" for variable b.
+
+% Integer number #0, #1,...
+
+%%% Function definition:
+%
+% FUNCTION {name}
+% { 's :=
+%
+% }
+%
+% This is the definition of a function named "name".   The function "name" is
+% used in the following way 
+%
+% "foo" name
+% "foo" is an argument for the function "name".
+%
+% About the definition of a function with more than two arguments, see the
+% definition of "chop.word".
+
+%%% Declaration of variables:
+
+%% String global variables:
+STRINGS { s t tt }
+STRINGS { year.num }
+STRINGS { preone preten }
+STRINGS { last.sort.label next.extra prev.author prev.author.aer this.author }
+STRINGS { hang }
+STRINGS { item.type }
+STRINGS { tempa tempb }
+
+%% Integer global variables:
+INTEGERS { nameptr namesleft numnames name.num }
+INTEGERS { multiresult }
+INTEGERS { index }
+INTEGERS { len }
+INTEGERS { last.extra.num }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+INTEGERS { last.period.comma }
+INTEGERS { len1.aer len2.aer i.aer }
+
+%%% Definition of functions:
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+
+%%% Initialize variables:
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+
+%%% Remove comma and add period:
+%
+%%%
+FUNCTION {add.period.x}
+{ duplicate$
+  #-1 #1 substring$ "," =
+    { #-2 global.max$ substring$ "." * }
+    { duplicate$
+      #-1 #2 substring$ ". " =
+        { #-3 global.max$ substring$ "." * }
+        { duplicate$
+          #-1 #2 substring$ ", " =
+            { #-3 global.max$ substring$ "." * }
+            { duplicate$
+              #-1 #2 substring$ ",'" =
+                { #-3 global.max$ substring$ ".'" * }
+                { duplicate$
+                  #-1 #2 substring$ ".'" =
+                    { #-3 global.max$ substring$ ".'" * }
+                    { duplicate$
+                      #-1 #2 substring$ ".~" =
+                        { #-3 global.max$ substring$ ".~" * }
+                        { duplicate$
+                          #-1 #2 substring$ ",~" =
+                            { #-3 global.max$ substring$ ".~" * }
+                            { duplicate$
+                              #-1 #3 substring$ ",''" =
+                                { #-4 global.max$ substring$ ".''" * }
+                                { duplicate$
+                                  #-1 #3 substring$ ".''" =
+                                    { #-4 global.max$ substring$ ".''" * }
+                                    { add.period$ }
+                                  if$
+                                }
+                              if$
+                            }
+                          if$
+                        }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {output.nonnull}
+{ 's :=
+  % mid.sentence
+  output.state mid.sentence =
+    { ", " * write$ }
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period.x " " * write$ }
+          if$
+        }
+      if$
+      % not mid.sentence, set to mid.sentence
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+
+%%% If the last character is period or comma, set non-zero to
+%%% last.period.comma.
+FUNCTION {period.comma.p}
+{ duplicate$ 't :=
+  t #-1 #1 substring$ "." = 
+  t #-1 #1 substring$ "," = or
+  t #-1 #1 substring$ ":" = or 
+  t #-1 #2 substring$ ".'" = or
+  t #-1 #2 substring$ ",'" = or
+  t #-1 #3 substring$ ".''" = or
+  t #-1 #3 substring$ ",''" = or
+  t #-1 #2 substring$ ".~" = or
+  t #-1 #2 substring$ ",~" = or
+    { #1 'last.period.comma := }
+    { #0 'last.period.comma := }
+  if$
+}
+
+%%% remove unnecessary comma.
+FUNCTION {remove.pre.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #1 #1 substring$ "," = 
+       { s #2 global.max$ substring$ }
+       { s #1 #1 substring$ "." = 
+          { s #2 global.max$ substring$ }
+          's
+         if$
+       }
+      if$
+    }
+  if$
+}
+
+%%% output.nonnull.nocomma is the same as output.nonnull except that it does
+%%% not add commas even in mid.sentence.
+FUNCTION {output.nonnull.nocomma}
+{ 's :=
+  output.state mid.sentence =
+    % mid.sentence
+    { period.comma.p "" * write$ }
+
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  last.period.comma #0 =
+    { s }
+    { s remove.pre.comma }
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output}
+% { duplicate$ empty$
+%     'pop$
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.nocomma}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull.nocomma
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output.check}
+% { 't :=
+%   duplicate$ empty$
+%     { pop$ "empty " t * " in " * cite$ * warning$ }
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.check.nocomma}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull.nocomma
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Format in bbl file:
+
+% \harvarditem[Brezis et~al.]{Brezis, Krugman and
+%   Tsiddon}{1993}{brezis93:_leapf_inter_compet}
+% Brezis, Elise~S., Paul~R. Krugman, and Daniel Tsiddon  (1993) ``Leapfrogging in
+%   International Competition: A Theory of Cycles in National Technological
+%   Leadership.'', {\em American Economic Review.}, Vol.~83. No.~5. pp.
+%   1211--1219.
+
+% \harvarditem[abbreviated citation]{full citation}{year}{keyword} ...
+
+%%% Add period and newline.
+FUNCTION {fin.entry}
+{ add.period.x
+  write$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+
+FUNCTION {new.block.check}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+
+%%% booktitle
+FUNCTION {format.btitle}
+{ booktitle empty$
+    { "" }
+    { bst.btitle.pre booktitle * bst.btitle.post * }
+  if$
+}
+
+FUNCTION {journal.name.sub}
+{ 't :=
+  t #1 #4 substring$ "The " =
+    % Use #30 to handle with the long journal name.
+    { t #5 #30 substring$ 't := }
+    'skip$
+  if$
+  t
+}
+
+FUNCTION {format.journal.name.abb}
+{ journal 's :=
+  journal 'jname :=
+  s journal.name.sub 's :=
+  bst.journal.name.abb #0 =
+    'skip$
+    { 
+       s "Academic Management Review" =
+        { "Acad. Manage. J." 'jname := }
+        'skip$
+      if$
+    }
+  if$
+  jname
+}
+
+%%% journal
+FUNCTION {format.journal}
+{ journal empty$
+    { "" }
+    { bst.journal.pre format.journal.name.abb * bst.journal.post * }
+  if$
+}
+
+%%% title for book
+FUNCTION {format.book}
+{ title empty$
+    { "" }
+    { bst.book.pre title * bst.book.post * }
+  if$
+}
+
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+    { type$ "online" = bst.show.url or
+        { bst.url.pre url * bst.url.post *
+          access empty$
+             { "" * }
+             { bst.access.pre * access * bst.access.post * }
+          if$
+        }
+        { "" }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.doi}
+{ doi empty$ bst.show.doi not or
+    { "" }
+    { bst.doi.pre doi * bst.doi.post * }
+  if$
+}
+
+FUNCTION {format.url.doi}
+{ url empty$
+    { format.doi }
+    { doi empty$
+        { format.url }
+        { bst.url.doi #0 =
+            { format.url output.nocomma
+              format.doi }
+            { bst.url.doi #1 =
+                { format.url } 
+                { format.doi }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% and others
+FUNCTION {bst.and.others.output}
+{ nameorder.temp "random" =
+  bst.use.nameorder #0 = not and
+    { bst.and.others.nameorder }
+    { bst.and.others }
+  if$
+}
+
+%%% author and editor
+
+%%% name
+FUNCTION {format.names}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+
+  { nameptr #1 =
+      % First author
+      { bst.author.name #0 =
+        bst.author.name #1 =
+        or
+           { bst.first.name.initial #0 = 
+            { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+            { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+           if$
+         }
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+           if$
+         }
+        if$
+      }
+      % The second or later authors
+      { bst.author.name #0 =
+        bst.author.name #2 =
+        or
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+             if$
+           }
+           { bst.first.name.initial #0 = 
+                { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+                { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+             if$
+           }
+        if$
+      }
+    if$
+    
+    nameptr #1 >
+      % The second or later authors
+      { numnames bst.max.author.num >
+          { bst.and.others * 
+            #1 'namesleft :=  }
+          { nameorder.temp "random" =
+            bst.use.nameorder #0 = not and
+              { bst.and.nameorder * t * }
+              { namesleft #1 >
+                  % More than one authors left
+                  { ", " * t * }
+                  % Only one author left
+                  { t "others" =
+                      { bst.and.others.output * }
+                      { numnames #2 =
+                          % Entry with two authors
+                          { bst.and * t * }
+                          { bst.ands * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% remove successive periods (commas) from author
+FUNCTION {remove.ss.period.auth}
+{ 's :=
+  s format.names 'tempa :=
+  bst.author.post 'tempb :=
+  tempb #1 #1 substring$ "}" =
+    { tempa tempb * }
+    { tempa #-1 #1 substring$ tempb #1 #1 substring$ = 
+        { tempa tempb #2 global.max$ substring$ * }
+        { tempa tempb * }
+      if$
+    }
+  if$
+}
+
+% <prev name list> <new name list> compare.names <modified name list>
+FUNCTION {compare.names.aer}
+{ 's :=
+  'tempa :=
+
+%   "current.author = " s * "\\" * write$ newline$
+%   "prev.author = " tempa * "\\" * write$ newline$
+
+  tempa num.names$ 'len1.aer :=  % len1 = the number of previous authors
+  s num.names$ 'len2.aer :=         % len2 = the number of current authors
+
+% len1.aer := min(len1.aer,len2.aer)
+% len1 -> min{ the number of previous authors, the number of current authors }
+  len1.aer len2.aer >
+    { len2.aer 'len1.aer := }
+    { }
+  if$
+
+% start with an empty string, then while the components are the same
+% add "\bysame"
+  ""
+  #1 'i.aer :=
+
+  { i.aer len1.aer > not }
+    { tempa i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      =
+        { #1 i.aer <
+            { " and " * }       % \bysame で省略する著者の前につく and 
+            { }
+          if$
+          "\bysame{}" *
+          i.aer #1 + 'i.aer := } 
+        { #-1 'len1.aer := }
+      if$
+    }
+  while$
+
+% add the rest of the second string
+  { i.aer len2.aer > not }
+    { #1 i.aer <
+        { " and " * }
+        { }
+      if$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$ *
+      i.aer #1 + 'i.aer :=
+    }
+  while$
+}
+
+%%% author
+FUNCTION {format.authors}
+{ author empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer author compare.names.aer 's :=
+          author 'prev.author.aer := }
+        { author 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors}
+{ editor empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer editor compare.names.aer 's :=
+          editor 'prev.author.aer := }
+        { editor 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+      s num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.authors.alt}
+{ author empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        {"\bysame "}
+        { bst.author.pre author remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors.alt}
+{ editor empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre editor remove.ss.period.auth * }
+      if$
+      editor num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+%%% format.in.ed.booktitle
+FUNCTION {format.editors.x}
+{ editor empty$
+    { "" }
+    { bst.editor.btitle.order #0 =
+        { "" }
+        { editor num.names$ #1 >
+           { bst.editors " by " * }
+           { bst.editor  " by " * }
+          if$
+        }
+      if$
+      editor format.names *
+      bst.editor.btitle.order #0 =
+        { editor num.names$ #1 >
+           { bst.editors * }
+           { bst.editor * }
+          if$
+        }
+        { "" * }
+      if$
+    }
+  if$
+}
+
+%%% Remove commas in the cases like "?." and "?,".
+FUNCTION {remove.irrelevant.period.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #-1 #3 substring$ "?,'" =
+      s #-1 #3 substring$ "?.'" = or
+        { s #-3 global.max$ substring$ "'" * }
+        { s #-1 #4 substring$ "?,''" =
+          s #-1 #4 substring$ "?.''" = or
+            { s #-4 global.max$ substring$ "''" * }
+            { s #-1 #2 substring$ "?," =
+              s #-1 #2 substring$ "?." = or
+                { s #-2 global.max$ substring$ "" * }
+                { s #-1 #3 substring$ "?,~" =
+                  s #-1 #3 substring$ "?.~" = or
+                    { s #-4 global.max$ substring$ "?~" * }
+                    's
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% title
+FUNCTION {format.title.sub}
+{ bst.title.lower.case #0 =
+     { bst.title.pre title * bst.title.post * }
+     { bst.title.pre title "t" change.case$ * bst.title.post * }
+  if$
+}
+
+%%% title
+FUNCTION {format.title}
+{ title empty$
+  bst.hide.title #0 = not or
+    { "" }
+    { format.title.sub remove.irrelevant.period.comma }
+  if$
+}
+
+%%% title for misc.
+FUNCTION {format.misc.title}
+{ title empty$
+    { "" }
+    { bst.title.pre title * bst.title.post * }
+  if$
+}
+
+% Convert "-" to "--" (for pages field)
+FUNCTION {n.dashify}
+{ 't :=
+  ""
+  %% while$
+  { t empty$ not }
+  { t #1 #1 substring$ "-" =
+      { t #1 #2 substring$ "--" = not
+          { "--" *
+            t #2 global.max$ substring$ 't :=
+          }
+          { { t #1 #1 substring$ "-" = }
+            { "-" *
+              t #2 global.max$ substring$ 't :=
+            }
+            while$
+          }
+        if$
+      }
+      { t #1 #1 substring$ *
+       t #2 global.max$ substring$ 't :=
+      }
+    if$
+  }
+  while$
+}
+
+%%% year
+FUNCTION {format.year}
+{ year empty$
+    { "there's no year in " cite$ * warning$
+      ", " }
+    { type$ "article" =
+        { bst.year.pre year * extra.label * bst.year.post * }
+        { bst.year.na.pre year * extra.label * bst.year.na.post * }
+      if$
+    }
+  if$
+}
+
+%%% page for book
+FUNCTION {format.book.pages}
+{ pages empty$
+    { "" }
+    { bst.pages.pre pages * bst.pages.post * }
+  if$
+}
+
+%%% Attach tie for the string with two or less characters.
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+    { "~" }
+    { " " }
+  if$
+  swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+
+%%% volume for book
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+    { bst.volume.pre volume * bst.volume.post *
+      series empty$
+        'skip$
+        %% If there is series field
+        { " of " * series * bst.series.post * }
+      if$
+%       "volume and number" number either.or.check
+    }
+  if$
+}
+
+%%% series
+FUNCTION {output.series}
+{ series empty$
+    { "" }
+    { bst.series.pre series * bst.series.post * }
+ if$
+}
+
+%%% number and series
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+      bst.hide.month #0 = not or
+        % number is empty
+        { series empty$
+            { "" }
+            % series is not empty.
+            { output.series }
+          if$
+        }
+        % number is not empty$
+        { series empty$
+            { bst.number.pre number * bst.number.post * }
+            % series is not empty.
+            { bst.in bst.series.pre * series * bst.series.post *
+              bst.number.pre * number * bst.number.post * }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+%%% Number or not.
+FUNCTION {is.num}
+{ chr.to.int$
+  duplicate$ "0" chr.to.int$ < not
+  swap$ "9" chr.to.int$ > not and
+}
+
+FUNCTION {extract.num}
+{ duplicate$ 't :=
+  "" 's :=
+  { t empty$ not }
+  { t #1 #1 substring$
+    t #2 global.max$ substring$ 't :=
+    duplicate$ is.num
+      { s swap$ * 's := }
+      { pop$ "" 't := }
+    if$
+  }
+  while$
+  s empty$
+    'skip$
+    { pop$ s }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%      edition
+
+% Convert edition to 1st, 2nd, 3rd, 4th etc
+FUNCTION {eng.ord}
+{ duplicate$ "1" swap$ *
+  #-2 #1 substring$ "1" =
+     { bst.th * }
+     { duplicate$ #-1 #1 substring$
+       duplicate$ "1" =
+         { pop$ bst.st * }
+         { duplicate$ "2" =
+             { pop$ bst.nd * }
+             { "3" =
+                 { bst.rd * }
+                 { bst.th * }
+               if$
+             }
+           if$
+          }
+       if$
+     }
+   if$
+}
+
+% Convert first, second etc in edition field to 1st, 2nd (from jfm.bst)
+FUNCTION {convert.edition}
+{ edition extract.num "l" change.case$ 's :=
+  s "first" = s "1" = or
+    { bst.first }
+    { s "second" = s "2" = or
+        { bst.second }
+        { s "third" = s "3" = or
+            { bst.third }
+            { s "fourth" = s "4" = or
+                { bst.fourth }
+                { s "fifth" = s "5" = or
+                    { bst.fifth }
+                    { s #1 #1 substring$ is.num
+                        { s eng.ord }
+                        { edition }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% edition
+FUNCTION {format.edition}
+{ edition empty$
+    { "" }
+    { output.state mid.sentence =
+        { bst.edition.pre convert.edition "l" change.case$ * bst.edition.post * }
+        { bst.edition.pre convert.edition "t" change.case$ * bst.edition.post * }
+      if$
+    }
+  if$
+}
+
+%%% month
+FUNCTION {format.month}
+{ month empty$
+  bst.hide.month #0 = not or
+    { "" }
+    { bst.month.pre month * bst.month.post * }
+  if$
+}
+
+%%% year and month
+FUNCTION {format.date}
+{ format.month format.year *
+}
+
+%%% Is multiple pages like 1-100?
+FUNCTION { multi.page.check }
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+
+%%% pages
+FUNCTION {format.pages}
+{ pages empty$
+    { "" }
+    { pages multi.page.check
+      { bst.pages.pre pages n.dashify tie.or.space.connect * bst.pages.post }
+      { bst.page.pre pages tie.or.space.connect * bst.page.post }
+     if$
+    }
+ if$
+}
+
+%%% number
+FUNCTION {format.number}
+{ number empty$
+  bst.hide.number #0 = not or
+    { "" }
+    { bst.number.pre number * bst.number.post * }
+  if$
+}
+
+%%% volume
+FUNCTION {format.volume}
+{ volume empty$
+    'skip$
+    { bst.volume.pre volume * bst.volume.post *
+      bst.year.position #3 =
+        { format.year * }
+        'skip$
+      if$
+    }
+  if$
+}
+
+%%% number, page
+FUNCTION {format.number.pages}
+{ number empty$
+    { format.pages }
+    { format.number format.pages * }
+  if$
+}
+
+%%% volume, page
+FUNCTION {format.volume.pages}
+{ volume empty$
+    { format.pages }
+    { format.volume format.pages * }
+  if$
+}
+
+%%% volume, number, page
+FUNCTION {format.volume.number.pages}
+{ volume empty$
+    { number empty$
+        { format.pages }
+        { format.number format.pages * }
+      if$
+    }
+    { number empty$
+        { format.volume format.pages * }
+        { format.volume format.number * format.pages * }
+      if$
+    }
+  if$
+}
+
+% volume, number, page
+FUNCTION {format.vol.num.pages}
+{ volume empty$
+    %% volume is empty.
+    { number empty$
+        %% number is empty.
+        { pages empty$
+            % warning
+            { "there is no volume, number, and pages in " cite$ * warning$ "" } 
+            { "" format.pages * }
+         if$
+        }
+        %% number is not empty.
+        % warning
+        { "there's a number but no volume in " cite$ * warning$
+          format.number.pages }
+     if$
+    }
+    %% volume is not empty.
+    { number empty$
+        %% number is empty.
+        { format.volume.pages }
+        %% number is not empty.
+        { format.volume.number.pages }
+     if$
+    }
+  if$
+}
+
+%%% chapter
+FUNCTION {format.chapter}
+{ chapter empty$
+    { "" }
+    { type empty$
+        { bst.chapter.pre chapter tie.or.space.connect * bst.chapter.post }
+        { ", " * type " " * chapter * }
+      if$
+    }
+  if$
+}
+
+%%% chapter, pages
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    { pages empty$
+        { "" }
+        { "" format.pages * }
+      if$
+    }
+    { pages empty$
+        { "" format.chapter * }
+        { "" format.chapter * format.pages * }
+      if$
+    }
+  if$
+}
+
+%%% editor and booktitle
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+    { "" }
+    { editor empty$
+        { bst.in format.btitle * }
+        { bst.editor.btitle.order #0 =
+            { bst.in format.editors.x * " " * format.btitle * }
+            { bst.in format.btitle * " " * format.editors.x * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% howpublished
+FUNCTION {format.howpublished}
+{ howpublished empty$
+    { "" }
+    { bst.howpublished.pre howpublished * bst.howpublished.post * }
+  if$
+}
+
+%%% address
+FUNCTION {format.address}
+{ address empty$
+    { "" }
+    { bst.address.pre address * bst.address.post * }
+  if$
+}
+
+%%% publisher
+FUNCTION {format.publisher}
+{ publisher empty$
+    { "" }
+    { bst.publisher.pre publisher * bst.publisher.post * }
+  if$
+}
+
+%%% organization
+FUNCTION {format.organization}
+{ organization empty$
+    { "" }
+    { bst.organization.pre organization * bst.organization.post * }
+  if$
+}
+
+%% publisher and address
+FUNCTION {output.publisher.address}
+{ address empty$
+    { format.publisher "publisher" output.check.nocomma }
+    { bst.address.position #0 = 
+        { format.address output.nocomma
+          format.publisher "publisher" output.check.nocomma }
+        { format.publisher "publisher" output.check.nocomma
+          format.address output.nocomma }
+      if$
+    }
+  if$
+}
+
+%% address, organization, publisher
+FUNCTION {output.address.organization.publisher}
+{ address empty$
+    %% address is empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            'skip$
+            { format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            { format.organization "organization" output.check.nocomma }
+            { format.organization "organization" output.check.nocomma
+              format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+     if$
+    }
+    %% address is not empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            %% publisher is empty
+            { format.address output.nocomma }
+            %% publisher is not empty
+            { bst.address.position #0 =
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            %% publisher is empty
+            { format.organization "organization" output.check.nocomma
+              format.address output.nocomma }
+            %% publisher is not empty
+            { format.organization "organization" output.check.nocomma
+              bst.address.position #0 = 
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+     if$
+    }
+  if$
+}
+
+%%% misc
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+    'skip$
+    { pop$ " " type * }
+  if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+    { bst.techrep }
+    { " " type * }
+  if$
+  number empty$
+    { "t" change.case$ }
+    { number tie.or.space.connect }
+  if$
+}
+
+%%% phdthesis
+FUNCTION {format.phd}
+{ bst.phdthesis }
+
+%%% mastersthesis
+FUNCTION {format.mthesis}
+{ bst.mthesis }
+
+%%% school
+FUNCTION {format.school}
+{ school empty$
+    { "" }
+    { bst.school.pre school * bst.school.post * }
+  if$
+}
+
+%%% institution
+FUNCTION {format.institution}
+{ institution empty$
+    { "" }
+    { bst.institution.pre institution * bst.institution.post * }
+  if$
+}
+
+%%% remove first ? characters.
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+
+FUNCTION {format.note}
+{ note empty$
+    { "" }
+    { bst.note.pre note * bst.note.post * }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        \havarditem
+
+FUNCTION {output.bibitem}
+{ newline$
+  "\harvarditem[" write$
+  alabel write$                 % alabel <- abbreviated citation
+  "]{" write$
+  flabel write$                 % flabel <- full citation
+  "}{" write$
+  cyear write$
+  % cyear = year
+  "}{" write$
+  cite$ write$                  % cite$ -> pusch keyword
+  "}" write$
+  % If number index is on
+  bst.use.number.index #0 =
+     'skip$
+     { index #1 + 'index :=
+       "" 'preone :=
+       "" 'preten :=
+       bst.number.index.digit "1" =
+         'skip$
+         { bst.number.index.digit "2" =
+           { "\hskip0.5em" 'preone := }
+           { bst.number.index.digit "3" =
+              { "\hskip1em" 'preone :=
+                "\hskip0.5em" 'preten := }
+              'skip$
+             if$
+           }
+         if$
+         }
+       if$  
+     }
+  if$
+  newline$
+  before.all 'output.state :=
+  ""
+  % number index
+  bst.use.number.index #0 =
+     'skip$
+     { index #10 <
+         % Insert spaces according to digit of number index.
+         { preone }
+         { index #100 <
+             { preten }
+             { "" }
+           if$
+         }
+       if$
+       bst.number.index.pre * index int.to.str$ * bst.number.index.post * write$
+     }
+ if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        article
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.journal "journal" output.check.nocomma
+  bst.year.position #2 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+  format.vol.num.pages output.nocomma
+
+  bst.year.position #1 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        book
+
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check 
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  format.edition output.nocomma
+  format.book.pages output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        booklet
+
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output.nocomma
+  format.year output.nocomma
+  format.misc.title "title" output.check.nocomma
+  format.howpublished output.nocomma
+  format.address output.nocomma
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inbook
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+%   format.book remove.pre.comma "title" output.check.nocomma
+  format.book "title" output.check.nocomma
+  format.edition output.nocomma
+
+  format.bvolume output.nocomma
+  format.chapter.pages "chapter and pages" output.check.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       incollection
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.edition output.nocomma
+  format.chapter.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inproceedings
+
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  format.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       conference
+
+FUNCTION {conference}
+{ inproceedings }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       manual
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization empty$
+        'skip$
+        { organization output.nonnull.nocomma
+          address output.nocomma
+        }
+      if$
+    }
+    { format.authors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  author empty$
+    { organization empty$
+        { format.address new.block.check
+          format.address output.nocomma
+        }
+        'skip$
+      if$
+    }
+    { output.address.organization.publisher }
+  if$
+  format.edition output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       mastersthesis
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.mthesis format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       misc
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Online
+
+FUNCTION {online}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       phdthesis
+
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  format.phd
+  format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  address empty$
+    'skip$
+    { format.address output.nocomma }
+  if$
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       proceedings
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization output.nocomma }
+    { format.editors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.btitle remove.pre.comma "title" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       techreport
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.tr.number output.nonnull.nocomma
+  format.institution "institution" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       unpublished
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  bst.year.position #0 = not
+    { format.date remove.pre.comma output.nocomma }
+    { month empty$
+        'skip$
+        { format.month remove.pre.comma output.nocomma }
+      if$
+    }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note "note" output.check.nocomma
+  fin.entry
+}
+
+FUNCTION {default.type}
+{ misc }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Alias for month names:
+
+MACRO {jan} {"January"}
+MACRO {feb} {"February"}
+MACRO {mar} {"March"}
+MACRO {apr} {"April"}
+MACRO {may} {"May"}
+MACRO {jun} {"June"}
+MACRO {jul} {"July"}
+MACRO {aug} {"August"}
+MACRO {sep} {"September"}
+MACRO {oct} {"October"}
+MACRO {nov} {"November"}
+MACRO {dec} {"December"}
+
+%%% Read entries:
+READ
+
+%%% Variable for remembering the order of citation.
+INTEGERS { order.num }
+FUNCTION {initialize.order.num}
+{
+  #1 'order.num :=
+}
+%%% Initialize a variables
+EXECUTE {initialize.order.num}
+
+%%% Variable for remembering the order of citation.
+FUNCTION {set.order.cited}
+{
+  order.num 'order.cited :=
+  #1 order.num + 'order.num :=
+}
+%%% Iterate for all entries:
+ITERATE {set.order.cited}
+
+%%% check the value of nameorder field.
+FUNCTION {set.nameorder}
+{ nameorder empty$
+    { "" 'nameorder.temp := }
+    { nameorder 'nameorder.temp := }
+  if$
+}
+%%% Iterate for all entries:
+ITERATE {set.nameorder}
+
+%%% Remove symbols and convert to lowercase.
+FUNCTION {sortify}
+{ purify$ "l" change.case$ }
+
+%%% names for sorting
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { nameptr #1 >
+        { ", " * }
+        'skip$
+      if$
+      s nameptr "{ll}{ f}{ j}" format.name$ 't :=
+      nameptr numnames = t "others" = and
+        { bst.and.others.output *}
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.names.abb}
+{ 's :=
+  s num.names$ 'numnames :=
+  numnames bst.and.others.num <
+     { s sort.format.names }
+     { s #1 "{ll}{ f}{ j}" format.name$ " zz " * }
+  if$
+}
+
+%%% Label for full author name.
+FUNCTION {format.lab.names.full}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{vv~}{ll}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                  { bst.and.nameorder * t * }
+                  { ", " * t * }
+                if$
+              }
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 > 
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.ands * t * }
+                        if$
+                      }
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.and * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+  numnames #1 > #1 #2 = and {", eds" *} {} if$
+  numnames #1 = #1 #2 = and {", ed" *} {} if$
+}
+
+%%% laberl for abbreviated author name.
+FUNCTION {format.lab.names.abb}
+{ 's :=
+   s num.names$ 'numnames :=
+   numnames bst.and.others.num <
+     % if the number of authors is less than bst.and.others.num, full name.
+     { s format.lab.names.full }
+     % if the number of authors is equal or more than bst.and.others.num, abbreviated name.
+     { s #1 "{ll}" format.name$ bst.and.others.output * }
+   if$
+}
+
+%%% abbreviated author
+FUNCTION {author.key.label.abb}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.key.label.full}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {format.names.full.wo.and}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{ll}{, ff}{, jj}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { " " * t * }
+              { t "others" =
+                  { " " * }
+                  { numnames #2 > 
+                      { " " * t * }
+                      { " " * t * }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+}
+
+FUNCTION {author.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.editor.key.full.wo.and}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.names.full.wo.and }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {editor.key.organization.key.full.wo.and}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.key.organization.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+%%% abbreviated author
+FUNCTION {author.editor.key.label.abb}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.abb }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.editor.key.label.full}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.full }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.full}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.abb}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.full}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.full }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.abb}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.abb }
+  if$
+}
+
+%%% Convert numbers: 0->9, 1->8, 2->7,..., 9->0
+FUNCTION {reverse.num}
+{ 's :=
+  s "1" =
+    { "8" 'year.num := }
+    { s "2" =
+        { "7" 'year.num := }
+        { s "3" =
+            { "6" 'year.num := }
+            { s "4" =
+                { "5" 'year.num := }
+                { s "5" =
+                    { "4" 'year.num := }
+                    { s "6" =
+                        { "3" 'year.num := }
+                        { s "7" =
+                            { "2" 'year.num := }
+                            { s "8" =
+                                { "1" 'year.num := }
+                                { s "9" =
+                                    { "0" 'year.num := }
+                                    { s "0" =
+                                        { "9" 'year.num := }
+                                        { "9" 'year.num := }
+                                    if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+  year.num
+}
+
+%%% Convert year (large number -> small number)
+FUNCTION {convert.year}
+{ 't := 
+  bst.reverse.year #0 =
+    { t 'tt := }
+    { t #1 #1 substring$ reverse.num 
+      t #2 #1 substring$ reverse.num *
+      t #3 #1 substring$ reverse.num *
+      t #4 #1 substring$ reverse.num * 'tt := }
+  if$
+  tt
+}
+
+%%% cyear
+FUNCTION {calc.cyear}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.full.wo.and
+    { type$ "proceedings" =
+        'editor.key.organization.key.full.wo.and
+        { type$ "manual" =
+            'author.key.organization.key.full.wo.and
+            'author.key.full.wo.and
+          if$
+        }
+      if$
+    }
+  if$
+  duplicate$
+  year empty$
+    { "2199" 'cyear := }
+    { year 'cyear := }
+  if$
+  year empty$
+    { " " "2199" convert.year * field.or.null * }
+    { " " year convert.year * field.or.null * }
+  if$
+  sortify 'sort.label :=
+  % For debug
+  econ.debug #0 = not
+    { "sort.label = ``\texttt{" write$
+      sort.label write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+ pop$
+}
+
+FUNCTION {calc.sort.label.abb}
+{ author empty$
+    { editor empty$
+       { "" }
+       { editor 's := }
+      if$
+    }
+    { author 's := }
+  if$
+  s sort.format.names.abb 't :=
+  year empty$
+    { t sortify " " * "2199" convert.year * 'sort.label.abb := }
+    { t sortify " " * year convert.year * 'sort.label.abb := }
+  if$
+  econ.debug #0 = not
+    { "sort.label.abb = ``\texttt{" write$
+      sort.label.abb write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+  if$
+}
+
+%%% flabel
+FUNCTION {calc.flabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.full
+    { type$ "proceedings" =
+        'editor.key.organization.label.full
+        { type$ "manual" =
+            'author.key.organization.label.full
+            'author.key.label.full
+          if$
+        }
+      if$
+    }
+  if$
+  'flabel :=
+  author empty$
+    'skip$
+    { author num.names$ 'numnames :=
+      numnames bst.max.author.num >
+        { alabel 'flabel := }
+        'skip$
+      if$
+    }
+  if$
+  % For debug
+  econ.debug #0 = not
+    { "flabel = ``\texttt{" write$
+      flabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% alabel
+FUNCTION {calc.alabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.abb
+    { type$ "proceedings" =
+        'editor.key.organization.label.abb
+        { type$ "manual" =
+            'author.key.organization.label.abb
+            'author.key.label.abb
+          if$
+        }
+      if$
+    }
+  if$
+  'alabel :=
+  % For debug
+  econ.debug #0 = not
+    { "alabel = ``\texttt{" write$
+      alabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% title for sorting
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+
+%%% author for sorting
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+%%% editor for sorting
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+
+%%% 1,...,9 -> 001,...,009
+%%% 10,...,99 -> 010,...,099
+FUNCTION {add.zero.to.number}
+{ 's :=
+    s text.length$ #1 =
+      { "00" s * }
+      { s text.length$ #2 =
+          { "0" s * }
+          { s }
+        if$
+      }
+   if$
+}
+
+%% entry type
+FUNCTION {bst.sort.entry.type.order}
+{ 'item.type :=
+  item.type "article" =
+    { "01" }
+    { item.type "book" =
+        { "02" }
+        { item.type "booklet" =
+            { "03" }
+            { item.type "comment" =
+                { "04" }
+                { item.type "conference" =
+                    { "05" }
+                    { item.type "inbook" =
+                        { "06" }
+                        { item.type "incollection" =
+                            { "07" }
+                            { item.type "inproceedings" =
+                                { "08" }
+                                { item.type "manual" =
+                                    { "09" }
+                                    { item.type "masterthesis" =
+                                        { "10" }
+                                        { item.type "misc" =
+                                           { "11" }
+                                           { item.type "phdthesis" =
+                                              { "12" }
+                                              { item.type "proceedings" =
+                                                 { "13" }
+                                                 { item.type "techreport" =
+                                                    { "14" }
+                                                    { item.type "unpublished" =
+                                                       { "15" }
+                                                       { "16" }
+                                                      if$
+                                                    }
+                                                   if$
+                                                 }
+                                                if$
+                                              }
+                                             if$
+                                           }
+                                          if$
+                                        }
+                                      if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+}
+
+%%% Create sort.key$: absorder -> author -> year -> order -> month -> title.
+FUNCTION {presort.one}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " *
+  sort.label.abb *
+  " " *  
+  type$ "book" = type$ "inbook" = or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  * " " *
+  " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " * sort.label * " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% Codes for debugging
+FUNCTION {calc.alabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.alabel: alabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {calc.flabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.flabel: flabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {presort.one.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (1st time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (2nd time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.cyear.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.cyear: sort.label = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.sort.label.abb.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.sort.label.abb: sort.label.abb = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+%%% alabel
+EXECUTE {calc.alabel.mess}
+ITERATE {calc.alabel}
+
+%%% flabel
+EXECUTE {calc.flabel.mess}
+ITERATE {calc.flabel}
+
+%%% cyear and sort.label
+EXECUTE {calc.cyear.mess}
+ITERATE {calc.cyear}
+
+%%%
+EXECUTE {calc.sort.label.abb.mess}
+ITERATE {calc.sort.label.abb}
+
+%%% Sorting by $sort.key (first time)
+%
+% Sorting is done in two times. This is the first time.
+%
+EXECUTE {presort.one.mess}
+ITERATE {presort.one}
+SORT
+
+FUNCTION {forward.pass}
+{ bst.use.bysame #0 = bst.use.bysame #2 = or
+    % Not use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+    }
+    % Use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+      author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+      if$
+      'this.author :=
+      % format.names 'this.author :=
+      this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {reverse.pass}
+{ next.extra "b" =
+    { "a" 'extra.label := }
+    'skip$
+  if$
+  extra.label empty$ not
+    { cyear extra.label * }
+    { cyear "" * }
+  if$
+  "" field.or.null *
+  'cyear :=
+  extra.label 'next.extra :=
+}
+
+%%% \bysame
+ITERATE {forward.pass}
+
+REVERSE {reverse.pass}
+
+%%% Sorting by sort.key$ (second time)
+EXECUTE {presort.two.mess}
+ITERATE {presort.two}
+SORT
+
+FUNCTION {reset.prev.author}
+{ "xxyyzz" 'prev.author := }
+
+EXECUTE {reset.prev.author}
+
+FUNCTION {forward.pass.two}
+{ bst.use.bysame #1 = 
+    { author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+     if$
+     'this.author :=
+     this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+     if$
+    }
+   'skip$
+  if$
+}
+
+ITERATE {forward.pass.two}
+
+FUNCTION{punctuation}
+{
+  "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" write$ newline$
+  "%  This bbl file is created by " econ.file * " ver." * econ.version *          write$ newline$
+  "%  The latest " econ.file * " is available at " *			write$ newline$
+  "%  <https://github.com/ShiroTakeda/econ-bst>"                        write$ newline$ newline$
+}
+
+EXECUTE {punctuation}
+
+FUNCTION {begin.bib}
+{
+  preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  bst.use.bysame #0 =
+     % Not use \bysame.
+     'skip$
+     % Use \bysame.
+     { "%%% Definition of \bysame" write$ newline$
+       "\ifx\undefined\bysame" write$ newline$
+       "\newcommand{\bysame}{" bst.bysame.definition * "}" *
+       write$ newline$
+       "\fi" write$ newline$ newline$ }
+  if$
+  %% When number index is attached to the beginning of each item.
+  bst.use.number.index #0 =
+     'skip$
+     { bst.number.index.digit "1" =
+         % one digit.
+         { bst.number.index.bibhang.one }
+         { bst.number.index.digit "2" =
+            % two digits.
+            { bst.number.index.bibhang.ten }
+            % three or more digits.
+            { bst.number.index.bibhang.hund }
+           if$
+         }
+       if$
+       'hang :=
+       "%%% Redefinition of \bibhang" write$ newline$
+       "\ifx\undefined\bibhang" write$ newline$
+       "\relax" write$ newline$
+       "\else" write$ newline$
+       "\setlength{\bibhang}{"
+       hang * "}" * write$ newline$ 
+       "\fi" write$ newline$ newline$
+       }
+  if$
+  "\begin{thebibliography}{xxx}" write$ newline$
+
+  %% Initialize the variable `index'.
+  #0 'index :=
+}
+
+FUNCTION {end.bib}
+{ newline$ "\end{thebibliography}" write$ newline$ }
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+EXECUTE {end.bib}
+
+%  --------------------
+%  Local Variables:
+%  fill-column: 78
+%  mode: bst
+%  End:
diff --git a/Master/texmf-dist/bibtex/bst/econ-bst/econ-econometrica.bst b/Master/texmf-dist/bibtex/bst/econ-bst/econ-econometrica.bst
new file mode 100644
index 00000000000..81bc4063ff9
--- /dev/null
+++ b/Master/texmf-dist/bibtex/bst/econ-bst/econ-econometrica.bst
@@ -0,0 +1,3640 @@
+%% econ.bst: BibTeX style file for papers in economics.
+%
+% Author: Shiro Takeda
+% Maintainer: Shiro Takeda
+% Copyright (C) 2001-2018 Shiro Takeda
+% First-written:       <2007/07/28>
+% Version: 2.7
+% Keywords: TeX, BibTeX, bst 
+% URL: https://github.com/ShiroTakeda/econ-bst
+
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% The Current Maintainer of this work is Shiro Takeda.
+
+% "econ-econometrica.bst" is a BibTeX style file for Econometrica.
+% "econ-econometrica.bst" is created from "econ.bst" which is distributed from
+% https://github.com/ShiroTakeda/econ-bst
+
+% Bug reports, requests and suggestions are welcome. 
+
+% For changelogs, see CHANGES.txt file.
+
+% version number
+FUNCTION {econ.version} { "2.7" }
+
+% File name
+FUNCTION {econ.file} { "econ-econometrica.bst" }
+
+% Debug mode. Non-zero makes debug mode on.
+FUNCTION {econ.debug}
+{ #0 }    % Debug mode off (default).
+% { #1 }    % Debug mode on.
+
+ENTRY
+  %%% Declaration of field
+  { access address author booktitle chapter doi edition editor howpublished
+    institution journal key month note number organization pages publisher
+    school series title type url volume year
+  % Fields specific to econ.bst
+    order absorder nameorder
+  }
+
+  % Definition of entry variable.  The entry variable is a variable which has
+  % different values according to different entries.
+  %% Integer entry variable:
+  { order.cited }
+
+  %% String entry variable
+  { label cyear flabel alabel extra.label sort.label sort.label.abb
+    extra.label.bysame nameorder.temp jname }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Use \bysame or not.
+%
+% If set to #0, \bysame is not used.
+% If set to #1, \bysame is used 
+% If set to #2, \bysame is used (alternative abbreviation style).
+%
+% Note that integer number is expressed as # + integer in bst file.
+% \bysame is the function that abbreviates succession of the same authors' name by ---.
+%
+% See econ-sample.pdf for details.
+% 
+FUNCTION {bst.use.bysame}
+% { #0 }    % Not use \bysame
+{ #1 }    % -> Use \bysame (default)
+% { #2 }    % -> Use \bysame of alternative style.
+
+% The definition of \bysame command.
+%
+FUNCTION {bst.bysame.definition}
+{ "\hskip.3em \leavevmode\rule[.5ex]{3em}{.3pt}\hskip0.5em" } % (default)
+% { "\leavevmode\hbox to\leftmargin{\hrulefill\,\,}" } % If you set #2 to bst.use.bysame, use this.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% The order of fist and last name.
+%
+FUNCTION {bst.author.name}
+{ #0 }    % (default)
+% { #1 }
+% { #2 }
+
+% Case of #0: First author -> last-first, other authors -> first-last. 
+% Fujita, Masahisa, Paul R. Krugman, and Anthony J. Venables. 
+
+% Case of #1: All authors -> last-first
+% Fujita, Masahisa, Krugman, Paul R., and Venables, Anthony J.
+
+% Case of #2: All authors -> first-last
+% Masahisa Fujita, Paul R. Krugman, and Anthony J. Venables.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Abbreviate first name of authors (editors):
+%
+FUNCTION {bst.first.name.initial}
+% { #0 }    % #0 -> full letters (default).
+{ #1 }    % Non-zero -> initial letter only.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Decapitalize of strings in title field.
+%
+FUNCTION {bst.title.lower.case}
+{ #0 }    % If #0, not decapitalize title (default).
+% { #1 }    % If non-#0, decapitalize title
+
+% Hide title filed.
+%
+FUNCTION {bst.hide.title}
+{ #0 }    % #0 -> Title field is displayed (default)
+% { #1 }    % Non-zer -> Title field is hidden 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide month.
+%
+FUNCTION {bst.hide.month}
+{ #0 }    % #0 -> show month field (default).
+% { #1 }    % non-#0 -> hide month field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Attach number index like plain.bst.
+%
+FUNCTION {bst.use.number.index}
+{ #0 }    % Not use number index (default).
+% { #1 }    % Non-#0 -> Use number index
+
+% The string before number index:
+%
+FUNCTION {bst.number.index.pre}
+{ "[" }    % (default)
+
+% The string after number index.  Adjustment is recommended.
+%
+FUNCTION {bst.number.index.post}
+{ "]\hskip1.0em " }    % (default)
+
+% Maximum digit of number index:
+% If the number of reference items >= 100, set 3 to this function.
+% If the number of reference items < 100, set 2 to this function.
+% If the number of reference items < 10, set 1 to this function.
+%
+FUNCTION {bst.number.index.digit}
+{ "2" }    % (default)
+% { "3" }
+
+% The functions below are used to adjust space and postion.  If you use fonts
+% other than computer modern fonts, you had better make adjustments.
+%
+% Setting for bst.number.index.digit = 1:
+FUNCTION {bst.number.index.bibhang.one}
+{ "2.05em" }    % (default)
+% Setting for bst.number.index.digit = 2:
+FUNCTION {bst.number.index.bibhang.ten}
+{ "2.55em" }    % (default)
+% Setting for bst.number.index.digit = 3:
+FUNCTION {bst.number.index.bibhang.hund}
+{ "3.05em" }    % (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Position of "year":
+%
+% You can choose the position of year by this function.
+%
+% If set to #0, year is placed right after "author".
+% If set to non-zero, year is placed at the end (before note field) except for
+% aritcle type entry. 
+%
+% In article type entry, the position of year changes according to the
+% following rule:
+% 
+% #1 -> year is placed at the end.
+% #2 -> year is placed after journal name in aritcle type entry.
+% #3 -> year is placed after volume in aritcle type entry.
+%
+FUNCTION {bst.year.position}
+{ #0 }    % (default).
+% { #1 }    % Last place before note.
+% { #2 }    % After journal name for aticle type entry.
+% { #3 }    % After volume for aticle type entry.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If 0, references are sorted by old documents -> recent documents.  If
+% non-zero, reverse order.
+FUNCTION {bst.reverse.year}
+{ #0 }    % Normal order (old -> recent) (default).
+% { #1 }    % inverse order (recent -> old)
+
+% If non-zero, sort references by using year field as the primary key
+% (chronological sorting).
+FUNCTION {bst.sort.year}
+{ #0 }    % Normal case: year is used as the sorting key next to author (default).
+% { #1 }    % year is used as the primary sorting key.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If non-zero, references are listed in citation order.
+%
+FUNCTION {bst.no.sort}
+{ #0 }    % (default)
+% { #1 }    % listed in citation order.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Non-zero -> sort references by entry type (article, book, incollection etc.)
+%
+FUNCTION {bst.sort.entry.type}
+{ #0 }    % #0 -> Normal (not sort references by entry type) (default).
+% { #1 }    % Non-zero -> sort references by entry type.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use absorder field to sort items.  Otherwise, ignore absorder field.
+%
+FUNCTION {bst.notuse.absorder.field}
+{ #0 }    % #0 -> Use absorder (default).
+% { #1 }    % Non-#0 -> Not use absorder.
+%
+% Order of priority to sort items
+% 
+% absorder -> author -> year -> order -> month -> title
+%
+% wehre absorder and order fields are specific to econ.bst.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use order field to sort items.  Otherwise, ignore order field.
+% Note: order field is specific to econ.bst.
+FUNCTION {bst.notuse.order.field}
+{ #0 }    % #0 -> Use order field (default).
+% { #1 }    % Non-#0 -> not use order field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%     and
+
+%%% String used to separate author names in references.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.and}
+{ ", and " }
+% { " and " }    % (default)
+
+%%% String used to separate author names in references (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.ands}
+{ ", and " }    % (default)
+
+%%% String used to separate author names in citation part.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.cite.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in citation part (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.cite.ands}
+{ " and " }    % (default)
+
+%%% If you want to use random author order for some bibliography entries, set
+% non-zero to this function.
+% 
+FUNCTION {bst.use.nameorder}
+{ #1 }	% Use random order (default)
+% { #0 }	% Not use random order
+
+%%% String used to separate author names in references for the entry of random
+% author order.
+%
+FUNCTION {bst.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+%%% String used to separate author names in citation part for the entry of
+% random author order
+%
+FUNCTION {bst.cite.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Author names in the citation part are abbreviated by et al. if the number of
+% authors is greater or equal to bst.and.others.num.
+FUNCTION {bst.and.others.num}
+{ #3 }    % If the number of authors is greater or equal to three (default).
+
+% If the number of authors is greater or equal to bst.max.author.num, only
+% first author is listed and other authors' names are abbreviated as "et al.".
+FUNCTION {bst.max.author.num}
+{ #12 }    % If the number of authors is greater or equal to 12 (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Strings used when abbreviating multiple-authors in citation part.
+FUNCTION {bst.and.others}
+{ " et~al." }    % (default)
+
+% Strings used when abbreviating multiple-authors in citation part for entries
+% with random author order.
+FUNCTION {bst.and.others.nameorder}
+{ " \textcircled{r}~al." }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       author 
+
+% The string before author:
+%
+FUNCTION {bst.author.pre}
+{ "\textsc{" }
+% { "" }    % (default)
+
+% The string after author:
+%
+FUNCTION {bst.author.post}
+{ "} " }
+% { "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       year
+
+% The string before year only for aritcle type entry.
+%
+FUNCTION {bst.year.pre}
+{ " (" }    % (default)
+
+% The string after year only for aritcle type entry.
+%
+FUNCTION {bst.year.post}
+{ "): " }
+% { ") " }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.pre}
+{ " (" }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.post}
+{ "): " }
+% { ") " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       title (except for title in book)
+
+% The string before title:
+%
+FUNCTION {bst.title.pre}
+{ "``" }    % (default)
+
+% The string after title:
+%
+FUNCTION {bst.title.post}
+{ ",''" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       tile for book:
+
+% The string before book title:
+%
+FUNCTION {bst.book.pre}
+{ " \textit{" }    % (default)
+
+% The string after book title:
+%
+FUNCTION {bst.book.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       booktitle
+
+% The string before booktitle:
+%
+FUNCTION {bst.btitle.pre}
+{ " \textit{" }    % (default)
+
+% The string after booktitle:
+%
+FUNCTION {bst.btitle.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       journal name
+
+% The string before journal name:
+%
+FUNCTION {bst.journal.pre}
+{ " \textit{" }    % (default)
+
+% The string after journal name:
+%
+FUNCTION {bst.journal.post}
+{ "}" }    % (default)
+
+% Use the abbreviated journal name
+%
+% If set to #0, do not use abbreviated journal name.
+% If set to non-#0, use abbreviated journal name.
+%
+FUNCTION {bst.journal.name.abb}
+{ #0 }    % (default)
+% { #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       editor notation:
+
+% The string that indicates multiple editors:
+%
+FUNCTION {bst.editors}
+{ " ed. " }
+% { " eds. " }    % (default)
+
+% The string that indicates single editor:
+%
+FUNCTION {bst.editor}
+{ " ed. " }    % (default)
+
+% Order of editor and booktitle in incollection and inproceedings entries.
+%
+% If set to #0: 	editors -> booktitle order
+% If set to non-zero:	booktitle -> editors order
+%
+FUNCTION {bst.editor.btitle.order}
+% { #0 }    % (default)
+{ #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       edition
+
+% The string before edition:
+%
+FUNCTION {bst.edition.pre}
+{ ", " }    % (default)
+
+% The string after edition:
+%
+FUNCTION {bst.edition.post}
+{ " edition" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       volume
+
+% The string before volume:
+%
+FUNCTION {bst.volume.pre}
+{ ", " }    % (default)
+
+% The string after volume:
+%
+FUNCTION {bst.volume.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       number
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide number.  If non-zero, number is suppressed. 
+FUNCTION {bst.hide.number}
+% { #0 }    % #0 -> show number field (default)
+{ #1 }    % non-#0 -> Hide number field.
+
+% The string before number:
+%
+FUNCTION {bst.number.pre}
+{ " (" }    % (default)
+
+% The string after number:
+%
+FUNCTION {bst.number.post}
+{ ")" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       in 
+
+% In
+%
+FUNCTION {bst.in}
+{ " in " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       page
+
+% The string before page (multiple pages):
+%
+FUNCTION {bst.pages.pre}
+{ ", " }    % (default)
+
+% The string before page:
+%
+FUNCTION {bst.page.pre}
+{ ", " }    % (default)
+
+% The string after page (multiple pages):
+%
+FUNCTION {bst.pages.post}
+{ "" }    % (default)
+
+% The string after page:
+%
+FUNCTION {bst.page.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       chapter
+
+% The string before chapter:
+%
+FUNCTION {bst.chapter.pre}
+{ ", Chap." }    % (default)
+
+% The string after chapter:
+%
+FUNCTION {bst.chapter.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       month
+
+% The string before month:
+%
+FUNCTION {bst.month.pre}
+{ ", " }    % (default)
+
+% The string after month:
+%
+FUNCTION {bst.month.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       address
+% The string before address:
+%
+FUNCTION {bst.address.pre}
+{ ", " }    % (default)
+
+% The string after address:
+%
+FUNCTION {bst.address.post}
+{ "" }    % (default)
+
+% You can choose the order of address and publisher by this function.
+%
+% If #0,	address -> publisher order (the default value).
+% If non-zero,	publisher -> address order.
+
+FUNCTION {bst.address.position}
+{ #0 }    % Address is placed before publisher (default)
+% { #1 }    % Address is placed after publisher 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       publisher
+
+% The string before publisher:
+%
+FUNCTION {bst.publisher.pre}
+{ ": " }    % (default)
+
+% The string after publisher:
+%
+FUNCTION {bst.publisher.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       series
+
+% The string before series:
+%
+FUNCTION {bst.series.pre}
+{ ", " }    % (default)
+
+% The string after series:
+%
+FUNCTION {bst.series.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       organization
+
+% The string before organization:
+%
+FUNCTION {bst.organization.pre}
+{ ", " }    % (default)
+
+% The string after organization:
+%
+FUNCTION {bst.organization.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       school
+
+% The string before school:
+%
+FUNCTION {bst.school.pre}
+{ ", " }    % (default)
+
+% The string after school:
+%
+FUNCTION {bst.school.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       institution
+
+% The string before institution:
+%
+FUNCTION {bst.institution.pre}
+{ ", " }    % (default)
+
+% The string after institution:
+%
+FUNCTION {bst.institution.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       howpublished
+
+% The string before howpublished:
+%
+FUNCTION {bst.howpublished.pre}
+{ " " }    % (default)
+
+% The string after howpublished:
+%
+FUNCTION {bst.howpublished.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       url
+
+% Show or Hide url.  If non-zero, url is displayed. Otherwise, url is suppressed. 
+FUNCTION {bst.show.url}
+{ #1 }    % non-#0 -> Show url field (default)
+% { #0 }    % #0 -> Not show url field.
+
+% The string before url:
+%
+FUNCTION {bst.url.pre}
+{ ", \url{" }	% (default)
+
+% The string after url:
+%
+FUNCTION {bst.url.post}
+{ "}" }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Access
+
+% This setting is valid only if there are "access" field in bib
+% files. The value of access field indicates accessed date for URL.
+
+% The string before access.
+FUNCTION {bst.access.pre}
+{ ", accessed on " } % (default)
+
+% The string after access.
+FUNCTION {bst.access.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       DOI (digital object identifier)
+
+% This setting is valid only if there are "doi" field in bib files.
+
+% Show or Hide DOI.  If non-zero, DOI is displayed. Otherwise, DOI is suppressed. 
+FUNCTION {bst.show.doi}
+{ #1 }    % non-#0 -> Show DOI field (default)
+% { #0 }    % #0 -> Not show DOI field.
+
+% The string before DOI:
+%
+FUNCTION {bst.doi.pre}
+{ ", \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * } % (default)
+
+% The string after DOI:
+%
+FUNCTION {bst.doi.post}
+{ "}}" }    % (default)
+
+% How to show URL and DOI fields when both fields exist.
+%
+% #0 -> Both fields are displayed
+% #1 -> Only URL field is displayed
+% #2 -> Only DOI field is displayed
+%
+FUNCTION {bst.url.doi}
+% { #0 }    % -> Both fields are displayed
+% { #1 }    % -> Only URL field is displayed
+{ #2 }    % (default) --> Only DOI field is displayed 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Other functions:
+
+% The string before note.
+FUNCTION {bst.note.pre}
+{ ", " }    % (default)
+
+% The string after note.
+FUNCTION {bst.note.post}
+{ "" }    % (default)
+
+% The string that represents Technical report:
+%
+FUNCTION {bst.techrep}
+{ "Technical Report" }    % (default)
+
+% The string that represents master thesis:
+%
+FUNCTION {bst.mthesis}
+{ " Master's thesis" }    % (default)
+
+% The string that represents phd thesis:
+%
+FUNCTION {bst.phdthesis}
+{ ", Ph.D. dissertation" }
+% { " Ph.D. dissertation" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization end here:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FUNCTION {bst.first}
+{ "1st" }
+
+FUNCTION {bst.second}
+{ "2nd" }
+
+FUNCTION {bst.third}
+{ "3rd" }
+
+FUNCTION {bst.fourth}
+{ "4th" }
+
+FUNCTION {bst.fifth}
+{ "5th" }
+
+FUNCTION {bst.st}
+{ "st" }
+
+FUNCTION {bst.nd}
+{ "nd" }
+
+FUNCTION {bst.rd}
+{ "rd" }
+
+FUNCTION {bst.th}
+{ "th" }
+
+%%%%% memo by Takeda
+
+% "a" 'b := indicates substituting string "a" for variable b.
+
+% Integer number #0, #1,...
+
+%%% Function definition:
+%
+% FUNCTION {name}
+% { 's :=
+%
+% }
+%
+% This is the definition of a function named "name".   The function "name" is
+% used in the following way 
+%
+% "foo" name
+% "foo" is an argument for the function "name".
+%
+% About the definition of a function with more than two arguments, see the
+% definition of "chop.word".
+
+%%% Declaration of variables:
+
+%% String global variables:
+STRINGS { s t tt }
+STRINGS { year.num }
+STRINGS { preone preten }
+STRINGS { last.sort.label next.extra prev.author prev.author.aer this.author }
+STRINGS { hang }
+STRINGS { item.type }
+STRINGS { tempa tempb }
+
+%% Integer global variables:
+INTEGERS { nameptr namesleft numnames name.num }
+INTEGERS { multiresult }
+INTEGERS { index }
+INTEGERS { len }
+INTEGERS { last.extra.num }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+INTEGERS { last.period.comma }
+INTEGERS { len1.aer len2.aer i.aer }
+
+%%% Definition of functions:
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+
+%%% Initialize variables:
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+
+%%% Remove comma and add period:
+%
+%%%
+FUNCTION {add.period.x}
+{ duplicate$
+  #-1 #1 substring$ "," =
+    { #-2 global.max$ substring$ "." * }
+    { duplicate$
+      #-1 #2 substring$ ". " =
+        { #-3 global.max$ substring$ "." * }
+        { duplicate$
+          #-1 #2 substring$ ", " =
+            { #-3 global.max$ substring$ "." * }
+            { duplicate$
+              #-1 #2 substring$ ",'" =
+                { #-3 global.max$ substring$ ".'" * }
+                { duplicate$
+                  #-1 #2 substring$ ".'" =
+                    { #-3 global.max$ substring$ ".'" * }
+                    { duplicate$
+                      #-1 #2 substring$ ".~" =
+                        { #-3 global.max$ substring$ ".~" * }
+                        { duplicate$
+                          #-1 #2 substring$ ",~" =
+                            { #-3 global.max$ substring$ ".~" * }
+                            { duplicate$
+                              #-1 #3 substring$ ",''" =
+                                { #-4 global.max$ substring$ ".''" * }
+                                { duplicate$
+                                  #-1 #3 substring$ ".''" =
+                                    { #-4 global.max$ substring$ ".''" * }
+                                    { add.period$ }
+                                  if$
+                                }
+                              if$
+                            }
+                          if$
+                        }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {output.nonnull}
+{ 's :=
+  % mid.sentence
+  output.state mid.sentence =
+    { ", " * write$ }
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period.x " " * write$ }
+          if$
+        }
+      if$
+      % not mid.sentence, set to mid.sentence
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+
+%%% If the last character is period or comma, set non-zero to
+%%% last.period.comma.
+FUNCTION {period.comma.p}
+{ duplicate$ 't :=
+  t #-1 #1 substring$ "." = 
+  t #-1 #1 substring$ "," = or
+  t #-1 #1 substring$ ":" = or 
+  t #-1 #2 substring$ ".'" = or
+  t #-1 #2 substring$ ",'" = or
+  t #-1 #3 substring$ ".''" = or
+  t #-1 #3 substring$ ",''" = or
+  t #-1 #2 substring$ ".~" = or
+  t #-1 #2 substring$ ",~" = or
+    { #1 'last.period.comma := }
+    { #0 'last.period.comma := }
+  if$
+}
+
+%%% remove unnecessary comma.
+FUNCTION {remove.pre.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #1 #1 substring$ "," = 
+       { s #2 global.max$ substring$ }
+       { s #1 #1 substring$ "." = 
+          { s #2 global.max$ substring$ }
+          's
+         if$
+       }
+      if$
+    }
+  if$
+}
+
+%%% output.nonnull.nocomma is the same as output.nonnull except that it does
+%%% not add commas even in mid.sentence.
+FUNCTION {output.nonnull.nocomma}
+{ 's :=
+  output.state mid.sentence =
+    % mid.sentence
+    { period.comma.p "" * write$ }
+
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  last.period.comma #0 =
+    { s }
+    { s remove.pre.comma }
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output}
+% { duplicate$ empty$
+%     'pop$
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.nocomma}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull.nocomma
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output.check}
+% { 't :=
+%   duplicate$ empty$
+%     { pop$ "empty " t * " in " * cite$ * warning$ }
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.check.nocomma}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull.nocomma
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Format in bbl file:
+
+% \harvarditem[Brezis et~al.]{Brezis, Krugman and
+%   Tsiddon}{1993}{brezis93:_leapf_inter_compet}
+% Brezis, Elise~S., Paul~R. Krugman, and Daniel Tsiddon  (1993) ``Leapfrogging in
+%   International Competition: A Theory of Cycles in National Technological
+%   Leadership.'', {\em American Economic Review.}, Vol.~83. No.~5. pp.
+%   1211--1219.
+
+% \harvarditem[abbreviated citation]{full citation}{year}{keyword} ...
+
+%%% Add period and newline.
+FUNCTION {fin.entry}
+{ add.period.x
+  write$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+
+FUNCTION {new.block.check}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+
+%%% booktitle
+FUNCTION {format.btitle}
+{ booktitle empty$
+    { "" }
+    { bst.btitle.pre booktitle * bst.btitle.post * }
+  if$
+}
+
+FUNCTION {journal.name.sub}
+{ 't :=
+  t #1 #4 substring$ "The " =
+    % Use #30 to handle with the long journal name.
+    { t #5 #30 substring$ 't := }
+    'skip$
+  if$
+  t
+}
+
+FUNCTION {format.journal.name.abb}
+{ journal 's :=
+  journal 'jname :=
+  s journal.name.sub 's :=
+  bst.journal.name.abb #0 =
+    'skip$
+    { 
+       s "Academic Management Review" =
+        { "Acad. Manage. J." 'jname := }
+        'skip$
+      if$
+    }
+  if$
+  jname
+}
+
+%%% journal
+FUNCTION {format.journal}
+{ journal empty$
+    { "" }
+    { bst.journal.pre format.journal.name.abb * bst.journal.post * }
+  if$
+}
+
+%%% title for book
+FUNCTION {format.book}
+{ title empty$
+    { "" }
+    { bst.book.pre title * bst.book.post * }
+  if$
+}
+
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+    { type$ "online" = bst.show.url or
+        { bst.url.pre url * bst.url.post *
+          access empty$
+             { "" * }
+             { bst.access.pre * access * bst.access.post * }
+          if$
+        }
+        { "" }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.doi}
+{ doi empty$ bst.show.doi not or
+    { "" }
+    { bst.doi.pre doi * bst.doi.post * }
+  if$
+}
+
+FUNCTION {format.url.doi}
+{ url empty$
+    { format.doi }
+    { doi empty$
+        { format.url }
+        { bst.url.doi #0 =
+            { format.url output.nocomma
+              format.doi }
+            { bst.url.doi #1 =
+                { format.url } 
+                { format.doi }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% and others
+FUNCTION {bst.and.others.output}
+{ nameorder.temp "random" =
+  bst.use.nameorder #0 = not and
+    { bst.and.others.nameorder }
+    { bst.and.others }
+  if$
+}
+
+%%% author and editor
+
+%%% name
+FUNCTION {format.names}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+
+  { nameptr #1 =
+      % First author
+      { bst.author.name #0 =
+        bst.author.name #1 =
+        or
+           { bst.first.name.initial #0 = 
+            { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+            { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+           if$
+         }
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+           if$
+         }
+        if$
+      }
+      % The second or later authors
+      { bst.author.name #0 =
+        bst.author.name #2 =
+        or
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+             if$
+           }
+           { bst.first.name.initial #0 = 
+                { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+                { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+             if$
+           }
+        if$
+      }
+    if$
+    
+    nameptr #1 >
+      % The second or later authors
+      { numnames bst.max.author.num >
+          { bst.and.others * 
+            #1 'namesleft :=  }
+          { nameorder.temp "random" =
+            bst.use.nameorder #0 = not and
+              { bst.and.nameorder * t * }
+              { namesleft #1 >
+                  % More than one authors left
+                  { ", " * t * }
+                  % Only one author left
+                  { t "others" =
+                      { bst.and.others.output * }
+                      { numnames #2 =
+                          % Entry with two authors
+                          { bst.and * t * }
+                          { bst.ands * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% For Econometrica, we define `format.name.ed` in addition to `format.name`.
+FUNCTION {format.names.ed}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+  {  nameptr #1 =
+     % First author
+     { bst.first.name.initial #0 = 
+        { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+        { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+       if$
+     }
+     % The second or later authors
+     { bst.first.name.initial #0 = 
+          { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+          { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+       if$
+     }
+    if$
+
+    nameptr #1 >
+      % The second or later authors
+      { nameorder.temp "random" =
+        bst.use.nameorder #0 = not and
+          { bst.and.nameorder * t * }
+          { namesleft #1 >
+              % More than one authors left
+              { ", " * t * }
+              % Only one author left
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 =
+                      % Entry with two authors
+                      { bst.and * t * }
+                      { bst.ands * t * }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% remove successive periods (commas) from author
+FUNCTION {remove.ss.period.auth}
+{ 's :=
+  s format.names 'tempa :=
+  bst.author.post 'tempb :=
+  tempb #1 #1 substring$ "}" =
+    { tempa tempb * }
+    { tempa #-1 #1 substring$ tempb #1 #1 substring$ = 
+        { tempa tempb #2 global.max$ substring$ * }
+        { tempa tempb * }
+      if$
+    }
+  if$
+}
+
+% <prev name list> <new name list> compare.names <modified name list>
+FUNCTION {compare.names.aer}
+{ 's :=
+  'tempa :=
+
+%   "current.author = " s * "\\" * write$ newline$
+%   "prev.author = " tempa * "\\" * write$ newline$
+
+  tempa num.names$ 'len1.aer :=  % len1 = the number of previous authors
+  s num.names$ 'len2.aer :=         % len2 = the number of current authors
+
+% len1.aer := min(len1.aer,len2.aer)
+% len1 -> min{ the number of previous authors, the number of current authors }
+  len1.aer len2.aer >
+    { len2.aer 'len1.aer := }
+    { }
+  if$
+
+% start with an empty string, then while the components are the same
+% add "\bysame"
+  ""
+  #1 'i.aer :=
+
+  { i.aer len1.aer > not }
+    { tempa i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      =
+        { #1 i.aer <
+            { " and " * }       % \bysame で省略する著者の前につく and 
+            { }
+          if$
+          "\bysame{}" *
+          i.aer #1 + 'i.aer := } 
+        { #-1 'len1.aer := }
+      if$
+    }
+  while$
+
+% add the rest of the second string
+  { i.aer len2.aer > not }
+    { #1 i.aer <
+        { " and " * }
+        { }
+      if$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$ *
+      i.aer #1 + 'i.aer :=
+    }
+  while$
+}
+
+%%% author
+FUNCTION {format.authors}
+{ author empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer author compare.names.aer 's :=
+          author 'prev.author.aer := }
+        { author 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors}
+{ editor empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer editor compare.names.aer 's :=
+          editor 'prev.author.aer := }
+        { editor 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+      s num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.authors.alt}
+{ author empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        {"\bysame "}
+        { bst.author.pre author remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors.alt}
+{ editor empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre editor remove.ss.period.auth * }
+      if$
+      editor num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+%%% format.in.ed.booktitle
+FUNCTION {format.editors.x}
+{ editor empty$
+    { "" }
+    { bst.editor.btitle.order #0 =
+        { "" }
+        { editor num.names$ #1 >
+           { bst.editors " by " * }
+           { bst.editor  " by " * }
+          if$
+        }
+      if$
+      editor format.names.ed *
+%       editor format.names *
+      bst.editor.btitle.order #0 =
+        { editor num.names$ #1 >
+           { bst.editors * }
+           { bst.editor * }
+          if$
+        }
+        { "" * }
+      if$
+    }
+  if$
+}
+
+%%% Remove commas in the cases like "?." and "?,".
+FUNCTION {remove.irrelevant.period.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #-1 #3 substring$ "?,'" =
+      s #-1 #3 substring$ "?.'" = or
+        { s #-3 global.max$ substring$ "'" * }
+        { s #-1 #4 substring$ "?,''" =
+          s #-1 #4 substring$ "?.''" = or
+            { s #-4 global.max$ substring$ "''" * }
+            { s #-1 #2 substring$ "?," =
+              s #-1 #2 substring$ "?." = or
+                { s #-2 global.max$ substring$ "" * }
+                { s #-1 #3 substring$ "?,~" =
+                  s #-1 #3 substring$ "?.~" = or
+                    { s #-4 global.max$ substring$ "?~" * }
+                    's
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% title
+FUNCTION {format.title.sub}
+{ bst.title.lower.case #0 =
+     { bst.title.pre title * bst.title.post * }
+     { bst.title.pre title "t" change.case$ * bst.title.post * }
+  if$
+}
+
+%%% title
+FUNCTION {format.title}
+{ title empty$
+  bst.hide.title #0 = not or
+    { "" }
+    { format.title.sub remove.irrelevant.period.comma }
+  if$
+}
+
+%%% title for misc.
+FUNCTION {format.misc.title}
+{ title empty$
+    { "" }
+    { bst.title.pre title * bst.title.post * }
+  if$
+}
+
+% Convert "-" to "--" (for pages field)
+FUNCTION {n.dashify}
+{ 't :=
+  ""
+  %% while$
+  { t empty$ not }
+  { t #1 #1 substring$ "-" =
+      { t #1 #2 substring$ "--" = not
+          { "--" *
+            t #2 global.max$ substring$ 't :=
+          }
+          { { t #1 #1 substring$ "-" = }
+            { "-" *
+              t #2 global.max$ substring$ 't :=
+            }
+            while$
+          }
+        if$
+      }
+      { t #1 #1 substring$ *
+       t #2 global.max$ substring$ 't :=
+      }
+    if$
+  }
+  while$
+}
+
+%%% year
+FUNCTION {format.year}
+{ year empty$
+    { "there's no year in " cite$ * warning$
+      ", " }
+    { type$ "article" =
+        { bst.year.pre year * extra.label * bst.year.post * }
+        { bst.year.na.pre year * extra.label * bst.year.na.post * }
+      if$
+    }
+  if$
+}
+
+%%% page for book
+FUNCTION {format.book.pages}
+{ pages empty$
+    { "" }
+    { bst.pages.pre pages * bst.pages.post * }
+  if$
+}
+
+%%% Attach tie for the string with two or less characters.
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+    { "~" }
+    { " " }
+  if$
+  swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+
+%%% volume for book
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+    { " Volume " volume * bst.volume.post *
+%     { bst.volume.pre volume * bst.volume.post *
+      series empty$
+        'skip$
+        %% If there is series field
+        { " of " * series * bst.series.post * }
+      if$
+%       "volume and number" number either.or.check
+    }
+  if$
+}
+
+%%% series
+FUNCTION {output.series}
+{ series empty$
+    { "" }
+    { bst.series.pre series * bst.series.post * }
+ if$
+}
+
+%%% number and series
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+      bst.hide.month #0 = not or
+        % number is empty
+        { series empty$
+            { "" }
+            % series is not empty.
+            { output.series }
+          if$
+        }
+        % number is not empty$
+        { series empty$
+            { bst.number.pre number * bst.number.post * }
+            % series is not empty.
+            { bst.in bst.series.pre * series * bst.series.post *
+              bst.number.pre * number * bst.number.post * }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+%%% Number or not.
+FUNCTION {is.num}
+{ chr.to.int$
+  duplicate$ "0" chr.to.int$ < not
+  swap$ "9" chr.to.int$ > not and
+}
+
+FUNCTION {extract.num}
+{ duplicate$ 't :=
+  "" 's :=
+  { t empty$ not }
+  { t #1 #1 substring$
+    t #2 global.max$ substring$ 't :=
+    duplicate$ is.num
+      { s swap$ * 's := }
+      { pop$ "" 't := }
+    if$
+  }
+  while$
+  s empty$
+    'skip$
+    { pop$ s }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%      edition
+
+% Convert edition to 1st, 2nd, 3rd, 4th etc
+FUNCTION {eng.ord}
+{ duplicate$ "1" swap$ *
+  #-2 #1 substring$ "1" =
+     { bst.th * }
+     { duplicate$ #-1 #1 substring$
+       duplicate$ "1" =
+         { pop$ bst.st * }
+         { duplicate$ "2" =
+             { pop$ bst.nd * }
+             { "3" =
+                 { bst.rd * }
+                 { bst.th * }
+               if$
+             }
+           if$
+          }
+       if$
+     }
+   if$
+}
+
+% Convert first, second etc in edition field to 1st, 2nd (from jfm.bst)
+FUNCTION {convert.edition}
+{ edition extract.num "l" change.case$ 's :=
+  s "first" = s "1" = or
+    { bst.first }
+    { s "second" = s "2" = or
+        { bst.second }
+        { s "third" = s "3" = or
+            { bst.third }
+            { s "fourth" = s "4" = or
+                { bst.fourth }
+                { s "fifth" = s "5" = or
+                    { bst.fifth }
+                    { s #1 #1 substring$ is.num
+                        { s eng.ord }
+                        { edition }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% edition
+FUNCTION {format.edition}
+{ edition empty$
+    { "" }
+    { output.state mid.sentence =
+        { bst.edition.pre convert.edition "l" change.case$ * bst.edition.post * }
+        { bst.edition.pre convert.edition "t" change.case$ * bst.edition.post * }
+      if$
+    }
+  if$
+}
+
+%%% month
+FUNCTION {format.month}
+{ month empty$
+  bst.hide.month #0 = not or
+    { "" }
+    { bst.month.pre month * bst.month.post * }
+  if$
+}
+
+%%% year and month
+FUNCTION {format.date}
+{ format.month format.year *
+}
+
+%%% Is multiple pages like 1-100?
+FUNCTION { multi.page.check }
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+
+%%% pages
+FUNCTION {format.pages}
+{ pages empty$
+    { "" }
+    { pages multi.page.check
+      { bst.pages.pre pages n.dashify tie.or.space.connect * bst.pages.post }
+      { bst.page.pre pages tie.or.space.connect * bst.page.post }
+     if$
+    }
+ if$
+}
+
+%%% number
+FUNCTION {format.number}
+{ number empty$
+  bst.hide.number #0 = not or
+    { "" }
+    { bst.number.pre number * bst.number.post * }
+  if$
+}
+
+%%% volume
+FUNCTION {format.volume}
+{ volume empty$
+    'skip$
+    { bst.volume.pre volume * bst.volume.post *
+      bst.year.position #3 =
+        { format.year * }
+        'skip$
+      if$
+    }
+  if$
+}
+
+%%% number, page
+FUNCTION {format.number.pages}
+{ number empty$
+    { format.pages }
+    { format.number format.pages * }
+  if$
+}
+
+%%% volume, page
+FUNCTION {format.volume.pages}
+{ volume empty$
+    { format.pages }
+    { format.volume format.pages * }
+  if$
+}
+
+%%% volume, number, page
+FUNCTION {format.volume.number.pages}
+{ volume empty$
+    { number empty$
+        { format.pages }
+        { format.number format.pages * }
+      if$
+    }
+    { number empty$
+        { format.volume format.pages * }
+        { format.volume format.number * format.pages * }
+      if$
+    }
+  if$
+}
+
+% volume, number, page
+FUNCTION {format.vol.num.pages}
+{ volume empty$
+    %% volume is empty.
+    { number empty$
+        %% number is empty.
+        { pages empty$
+            % warning
+            { "there is no volume, number, and pages in " cite$ * warning$ "" } 
+            { "" format.pages * }
+         if$
+        }
+        %% number is not empty.
+        % warning
+        { "there's a number but no volume in " cite$ * warning$
+          format.number.pages }
+     if$
+    }
+    %% volume is not empty.
+    { number empty$
+        %% number is empty.
+        { format.volume.pages }
+        %% number is not empty.
+        { format.volume.number.pages }
+     if$
+    }
+  if$
+}
+
+%%% chapter
+FUNCTION {format.chapter}
+{ chapter empty$
+    { "" }
+    { type empty$
+        { bst.chapter.pre chapter tie.or.space.connect * bst.chapter.post }
+        { ", " * type " " * chapter * }
+      if$
+    }
+  if$
+}
+
+%%% chapter, pages
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    { pages empty$
+        { "" }
+        { "" format.pages * }
+      if$
+    }
+    { pages empty$
+        { "" format.chapter * }
+        { "" format.chapter * format.pages * }
+      if$
+    }
+  if$
+}
+
+%%% editor and booktitle
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+    { "" }
+    { editor empty$
+        { bst.in format.btitle * }
+        { bst.editor.btitle.order #0 =
+            { bst.in format.editors.x * " " * format.btitle * }
+            { bst.in format.btitle * " " * format.editors.x * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% howpublished
+FUNCTION {format.howpublished}
+{ howpublished empty$
+    { "" }
+    { bst.howpublished.pre howpublished * bst.howpublished.post * }
+  if$
+}
+
+%%% address
+FUNCTION {format.address}
+{ address empty$
+    { "" }
+    { bst.address.pre address * bst.address.post * }
+  if$
+}
+
+%%% publisher
+FUNCTION {format.publisher}
+{ publisher empty$
+    { "" }
+    { bst.publisher.pre publisher * bst.publisher.post * }
+  if$
+}
+
+%%% organization
+FUNCTION {format.organization}
+{ organization empty$
+    { "" }
+    { bst.organization.pre organization * bst.organization.post * }
+  if$
+}
+
+%% publisher and address
+FUNCTION {output.publisher.address}
+{ address empty$
+    { format.publisher "publisher" output.check.nocomma }
+    { bst.address.position #0 = 
+        { format.address output.nocomma
+          format.publisher "publisher" output.check.nocomma }
+        { format.publisher "publisher" output.check.nocomma
+          format.address output.nocomma }
+      if$
+    }
+  if$
+}
+
+%% address, organization, publisher
+FUNCTION {output.address.organization.publisher}
+{ address empty$
+    %% address is empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            'skip$
+            { format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            { format.organization "organization" output.check.nocomma }
+            { format.organization "organization" output.check.nocomma
+              format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+     if$
+    }
+    %% address is not empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            %% publisher is empty
+            { format.address output.nocomma }
+            %% publisher is not empty
+            { bst.address.position #0 =
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            %% publisher is empty
+            { format.organization "organization" output.check.nocomma
+              format.address output.nocomma }
+            %% publisher is not empty
+            { format.organization "organization" output.check.nocomma
+              bst.address.position #0 = 
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+     if$
+    }
+  if$
+}
+
+%%% misc
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+    'skip$
+    { pop$ " " type * }
+  if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+    { bst.techrep }
+    { " " type * }
+  if$
+  number empty$
+    { "t" change.case$ }
+    { number tie.or.space.connect }
+  if$
+}
+
+%%% phdthesis
+FUNCTION {format.phd}
+{ bst.phdthesis }
+
+%%% mastersthesis
+FUNCTION {format.mthesis}
+{ bst.mthesis }
+
+%%% school
+FUNCTION {format.school}
+{ school empty$
+    { "" }
+    { bst.school.pre school * bst.school.post * }
+  if$
+}
+
+%%% institution
+FUNCTION {format.institution}
+{ institution empty$
+    { "" }
+    { bst.institution.pre institution * bst.institution.post * }
+  if$
+}
+
+%%% remove first ? characters.
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+
+FUNCTION {format.note}
+{ note empty$
+    { "" }
+    { bst.note.pre note * bst.note.post * }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        \havarditem
+
+FUNCTION {output.bibitem}
+{ newline$
+  "\harvarditem[" write$
+  alabel write$                 % alabel <- abbreviated citation
+  "]{" write$
+  flabel write$                 % flabel <- full citation
+  "}{" write$
+  cyear write$
+  % cyear = year
+  "}{" write$
+  cite$ write$                  % cite$ -> pusch keyword
+  "}" write$
+  % If number index is on
+  bst.use.number.index #0 =
+     'skip$
+     { index #1 + 'index :=
+       "" 'preone :=
+       "" 'preten :=
+       bst.number.index.digit "1" =
+         'skip$
+         { bst.number.index.digit "2" =
+           { "\hskip0.5em" 'preone := }
+           { bst.number.index.digit "3" =
+              { "\hskip1em" 'preone :=
+                "\hskip0.5em" 'preten := }
+              'skip$
+             if$
+           }
+         if$
+         }
+       if$  
+     }
+  if$
+  newline$
+  before.all 'output.state :=
+  ""
+  % number index
+  bst.use.number.index #0 =
+     'skip$
+     { index #10 <
+         % Insert spaces according to digit of number index.
+         { preone }
+         { index #100 <
+             { preten }
+             { "" }
+           if$
+         }
+       if$
+       bst.number.index.pre * index int.to.str$ * bst.number.index.post * write$
+     }
+ if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        article
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.journal "journal" output.check.nocomma
+  bst.year.position #2 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+  format.vol.num.pages output.nocomma
+
+  bst.year.position #1 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        book
+
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check 
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  format.edition output.nocomma
+  format.book.pages output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        booklet
+
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output.nocomma
+  format.year output.nocomma
+  format.misc.title "title" output.check.nocomma
+  format.howpublished output.nocomma
+  format.address output.nocomma
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inbook
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+%   format.book remove.pre.comma "title" output.check.nocomma
+  format.book "title" output.check.nocomma
+  format.edition output.nocomma
+
+  format.bvolume output.nocomma
+  format.chapter.pages "chapter and pages" output.check.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       incollection
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  % For Econometrica, publisher and its address are placed before edition,
+  % chapter and page number.
+  output.address.organization.publisher
+  format.edition output.nocomma
+  format.chapter.pages output.nocomma
+%   output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inproceedings
+
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  format.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       conference
+
+FUNCTION {conference}
+{ inproceedings }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       manual
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization empty$
+        'skip$
+        { organization output.nonnull.nocomma
+          address output.nocomma
+        }
+      if$
+    }
+    { format.authors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  author empty$
+    { organization empty$
+        { format.address new.block.check
+          format.address output.nocomma
+        }
+        'skip$
+      if$
+    }
+    { output.address.organization.publisher }
+  if$
+  format.edition output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       mastersthesis
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.mthesis format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       misc
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Online
+
+FUNCTION {online}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       phdthesis
+
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  format.phd
+  format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  address empty$
+    'skip$
+    { format.address output.nocomma }
+  if$
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       proceedings
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization output.nocomma }
+    { format.editors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.btitle remove.pre.comma "title" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       techreport
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.tr.number output.nonnull.nocomma
+  format.institution "institution" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       unpublished
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  bst.year.position #0 = not
+    { format.date remove.pre.comma output.nocomma }
+    { month empty$
+        'skip$
+        { format.month remove.pre.comma output.nocomma }
+      if$
+    }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note "note" output.check.nocomma
+  fin.entry
+}
+
+FUNCTION {default.type}
+{ misc }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Alias for month names:
+
+MACRO {jan} {"January"}
+MACRO {feb} {"February"}
+MACRO {mar} {"March"}
+MACRO {apr} {"April"}
+MACRO {may} {"May"}
+MACRO {jun} {"June"}
+MACRO {jul} {"July"}
+MACRO {aug} {"August"}
+MACRO {sep} {"September"}
+MACRO {oct} {"October"}
+MACRO {nov} {"November"}
+MACRO {dec} {"December"}
+
+%%% Read entries:
+READ
+
+%%% Variable for remembering the order of citation.
+INTEGERS { order.num }
+FUNCTION {initialize.order.num}
+{
+  #1 'order.num :=
+}
+%%% Initialize a variables
+EXECUTE {initialize.order.num}
+
+%%% Variable for remembering the order of citation.
+FUNCTION {set.order.cited}
+{
+  order.num 'order.cited :=
+  #1 order.num + 'order.num :=
+}
+%%% Iterate for all entries:
+ITERATE {set.order.cited}
+
+%%% check the value of nameorder field.
+FUNCTION {set.nameorder}
+{ nameorder empty$
+    { "" 'nameorder.temp := }
+    { nameorder 'nameorder.temp := }
+  if$
+}
+%%% Iterate for all entries:
+ITERATE {set.nameorder}
+
+%%% Remove symbols and convert to lowercase.
+FUNCTION {sortify}
+{ purify$ "l" change.case$ }
+
+%%% names for sorting
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { nameptr #1 >
+        { ", " * }
+        'skip$
+      if$
+      s nameptr "{ll}{ f}{ j}" format.name$ 't :=
+      nameptr numnames = t "others" = and
+        { bst.and.others.output *}
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.names.abb}
+{ 's :=
+  s num.names$ 'numnames :=
+  numnames bst.and.others.num <
+     { s sort.format.names }
+     { s #1 "{ll}{ f}{ j}" format.name$ " zz " * }
+  if$
+}
+
+%%% Label for full author name.
+FUNCTION {format.lab.names.full}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{vv~}{ll}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                  { bst.and.nameorder * t * }
+                  { ", " * t * }
+                if$
+              }
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 > 
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.ands * t * }
+                        if$
+                      }
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.and * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+  numnames #1 > #1 #2 = and {", eds" *} {} if$
+  numnames #1 = #1 #2 = and {", ed" *} {} if$
+}
+
+%%% laberl for abbreviated author name.
+FUNCTION {format.lab.names.abb}
+{ 's :=
+   s num.names$ 'numnames :=
+   numnames bst.and.others.num <
+     % if the number of authors is less than bst.and.others.num, full name.
+     { s format.lab.names.full }
+     % if the number of authors is equal or more than bst.and.others.num, abbreviated name.
+     { s #1 "{ll}" format.name$ bst.and.others.output * }
+   if$
+}
+
+%%% abbreviated author
+FUNCTION {author.key.label.abb}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.key.label.full}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {format.names.full.wo.and}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{ll}{, ff}{, jj}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { " " * t * }
+              { t "others" =
+                  { " " * }
+                  { numnames #2 > 
+                      { " " * t * }
+                      { " " * t * }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+}
+
+FUNCTION {author.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.editor.key.full.wo.and}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.names.full.wo.and }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {editor.key.organization.key.full.wo.and}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.key.organization.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+%%% abbreviated author
+FUNCTION {author.editor.key.label.abb}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.abb }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.editor.key.label.full}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.full }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.full}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.abb}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.full}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.full }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.abb}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.abb }
+  if$
+}
+
+%%% Convert numbers: 0->9, 1->8, 2->7,..., 9->0
+FUNCTION {reverse.num}
+{ 's :=
+  s "1" =
+    { "8" 'year.num := }
+    { s "2" =
+        { "7" 'year.num := }
+        { s "3" =
+            { "6" 'year.num := }
+            { s "4" =
+                { "5" 'year.num := }
+                { s "5" =
+                    { "4" 'year.num := }
+                    { s "6" =
+                        { "3" 'year.num := }
+                        { s "7" =
+                            { "2" 'year.num := }
+                            { s "8" =
+                                { "1" 'year.num := }
+                                { s "9" =
+                                    { "0" 'year.num := }
+                                    { s "0" =
+                                        { "9" 'year.num := }
+                                        { "9" 'year.num := }
+                                    if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+  year.num
+}
+
+%%% Convert year (large number -> small number)
+FUNCTION {convert.year}
+{ 't := 
+  bst.reverse.year #0 =
+    { t 'tt := }
+    { t #1 #1 substring$ reverse.num 
+      t #2 #1 substring$ reverse.num *
+      t #3 #1 substring$ reverse.num *
+      t #4 #1 substring$ reverse.num * 'tt := }
+  if$
+  tt
+}
+
+%%% cyear
+FUNCTION {calc.cyear}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.full.wo.and
+    { type$ "proceedings" =
+        'editor.key.organization.key.full.wo.and
+        { type$ "manual" =
+            'author.key.organization.key.full.wo.and
+            'author.key.full.wo.and
+          if$
+        }
+      if$
+    }
+  if$
+  duplicate$
+  year empty$
+    { "2199" 'cyear := }
+    { year 'cyear := }
+  if$
+  year empty$
+    { " " "2199" convert.year * field.or.null * }
+    { " " year convert.year * field.or.null * }
+  if$
+  sortify 'sort.label :=
+  % For debug
+  econ.debug #0 = not
+    { "sort.label = ``\texttt{" write$
+      sort.label write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+ pop$
+}
+
+FUNCTION {calc.sort.label.abb}
+{ author empty$
+    { editor empty$
+       { "" }
+       { editor 's := }
+      if$
+    }
+    { author 's := }
+  if$
+  s sort.format.names.abb 't :=
+  year empty$
+    { t sortify " " * "2199" convert.year * 'sort.label.abb := }
+    { t sortify " " * year convert.year * 'sort.label.abb := }
+  if$
+  econ.debug #0 = not
+    { "sort.label.abb = ``\texttt{" write$
+      sort.label.abb write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+  if$
+}
+
+%%% flabel
+FUNCTION {calc.flabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.full
+    { type$ "proceedings" =
+        'editor.key.organization.label.full
+        { type$ "manual" =
+            'author.key.organization.label.full
+            'author.key.label.full
+          if$
+        }
+      if$
+    }
+  if$
+  'flabel :=
+  author empty$
+    'skip$
+    { author num.names$ 'numnames :=
+      numnames bst.max.author.num >
+        { alabel 'flabel := }
+        'skip$
+      if$
+    }
+  if$
+  % For debug
+  econ.debug #0 = not
+    { "flabel = ``\texttt{" write$
+      flabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% alabel
+FUNCTION {calc.alabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.abb
+    { type$ "proceedings" =
+        'editor.key.organization.label.abb
+        { type$ "manual" =
+            'author.key.organization.label.abb
+            'author.key.label.abb
+          if$
+        }
+      if$
+    }
+  if$
+  'alabel :=
+  % For debug
+  econ.debug #0 = not
+    { "alabel = ``\texttt{" write$
+      alabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% title for sorting
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+
+%%% author for sorting
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+%%% editor for sorting
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+
+%%% 1,...,9 -> 001,...,009
+%%% 10,...,99 -> 010,...,099
+FUNCTION {add.zero.to.number}
+{ 's :=
+    s text.length$ #1 =
+      { "00" s * }
+      { s text.length$ #2 =
+          { "0" s * }
+          { s }
+        if$
+      }
+   if$
+}
+
+%% entry type
+FUNCTION {bst.sort.entry.type.order}
+{ 'item.type :=
+  item.type "article" =
+    { "01" }
+    { item.type "book" =
+        { "02" }
+        { item.type "booklet" =
+            { "03" }
+            { item.type "comment" =
+                { "04" }
+                { item.type "conference" =
+                    { "05" }
+                    { item.type "inbook" =
+                        { "06" }
+                        { item.type "incollection" =
+                            { "07" }
+                            { item.type "inproceedings" =
+                                { "08" }
+                                { item.type "manual" =
+                                    { "09" }
+                                    { item.type "masterthesis" =
+                                        { "10" }
+                                        { item.type "misc" =
+                                           { "11" }
+                                           { item.type "phdthesis" =
+                                              { "12" }
+                                              { item.type "proceedings" =
+                                                 { "13" }
+                                                 { item.type "techreport" =
+                                                    { "14" }
+                                                    { item.type "unpublished" =
+                                                       { "15" }
+                                                       { "16" }
+                                                      if$
+                                                    }
+                                                   if$
+                                                 }
+                                                if$
+                                              }
+                                             if$
+                                           }
+                                          if$
+                                        }
+                                      if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+}
+
+%%% Create sort.key$: absorder -> author -> year -> order -> month -> title.
+FUNCTION {presort.one}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " *
+  sort.label.abb *
+  " " *  
+  type$ "book" = type$ "inbook" = or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  * " " *
+  " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " * sort.label * " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% Codes for debugging
+FUNCTION {calc.alabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.alabel: alabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {calc.flabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.flabel: flabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {presort.one.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (1st time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (2nd time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.cyear.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.cyear: sort.label = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.sort.label.abb.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.sort.label.abb: sort.label.abb = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+%%% alabel
+EXECUTE {calc.alabel.mess}
+ITERATE {calc.alabel}
+
+%%% flabel
+EXECUTE {calc.flabel.mess}
+ITERATE {calc.flabel}
+
+%%% cyear and sort.label
+EXECUTE {calc.cyear.mess}
+ITERATE {calc.cyear}
+
+%%%
+EXECUTE {calc.sort.label.abb.mess}
+ITERATE {calc.sort.label.abb}
+
+%%% Sorting by $sort.key (first time)
+%
+% Sorting is done in two times. This is the first time.
+%
+EXECUTE {presort.one.mess}
+ITERATE {presort.one}
+SORT
+
+FUNCTION {forward.pass}
+{ bst.use.bysame #0 = bst.use.bysame #2 = or
+    % Not use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+    }
+    % Use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+      author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+      if$
+      'this.author :=
+      % format.names 'this.author :=
+      this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {reverse.pass}
+{ next.extra "b" =
+    { "a" 'extra.label := }
+    'skip$
+  if$
+  extra.label empty$ not
+    { cyear extra.label * }
+    { cyear "" * }
+  if$
+  "" field.or.null *
+  'cyear :=
+  extra.label 'next.extra :=
+}
+
+%%% \bysame
+ITERATE {forward.pass}
+
+REVERSE {reverse.pass}
+
+%%% Sorting by sort.key$ (second time)
+EXECUTE {presort.two.mess}
+ITERATE {presort.two}
+SORT
+
+FUNCTION {reset.prev.author}
+{ "xxyyzz" 'prev.author := }
+
+EXECUTE {reset.prev.author}
+
+FUNCTION {forward.pass.two}
+{ bst.use.bysame #1 = 
+    { author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+     if$
+     'this.author :=
+     this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+     if$
+    }
+   'skip$
+  if$
+}
+
+ITERATE {forward.pass.two}
+
+FUNCTION{punctuation}
+{
+  "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" write$ newline$
+  "%  This bbl file is created by " econ.file * " ver." * econ.version *          write$ newline$
+  "%  The latest " econ.file * " is available at " *			write$ newline$
+  "%  <https://github.com/ShiroTakeda/econ-bst>"                        write$ newline$ newline$
+}
+
+EXECUTE {punctuation}
+
+FUNCTION {begin.bib}
+{
+  preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  bst.use.bysame #0 =
+     % Not use \bysame.
+     'skip$
+     % Use \bysame.
+     { "%%% Definition of \bysame" write$ newline$
+       "\ifx\undefined\bysame" write$ newline$
+       "\newcommand{\bysame}{" bst.bysame.definition * "}" *
+       write$ newline$
+       "\fi" write$ newline$ newline$ }
+  if$
+  %% When number index is attached to the beginning of each item.
+  bst.use.number.index #0 =
+     'skip$
+     { bst.number.index.digit "1" =
+         % one digit.
+         { bst.number.index.bibhang.one }
+         { bst.number.index.digit "2" =
+            % two digits.
+            { bst.number.index.bibhang.ten }
+            % three or more digits.
+            { bst.number.index.bibhang.hund }
+           if$
+         }
+       if$
+       'hang :=
+       "%%% Redefinition of \bibhang" write$ newline$
+       "\ifx\undefined\bibhang" write$ newline$
+       "\relax" write$ newline$
+       "\else" write$ newline$
+       "\setlength{\bibhang}{"
+       hang * "}" * write$ newline$ 
+       "\fi" write$ newline$ newline$
+       }
+  if$
+  "\begin{thebibliography}{xxx}" write$ newline$
+
+  %% Initialize the variable `index'.
+  #0 'index :=
+}
+
+FUNCTION {end.bib}
+{ newline$ "\end{thebibliography}" write$ newline$ }
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+EXECUTE {end.bib}
+
+%  --------------------
+%  Local Variables:
+%  fill-column: 78
+%  mode: bst
+%  End:
diff --git a/Master/texmf-dist/bibtex/bst/econ-bst/econ-jet.bst b/Master/texmf-dist/bibtex/bst/econ-bst/econ-jet.bst
new file mode 100644
index 00000000000..67a00ed0833
--- /dev/null
+++ b/Master/texmf-dist/bibtex/bst/econ-bst/econ-jet.bst
@@ -0,0 +1,4736 @@
+%% econ-jet.bst: BibTeX style file for "Journal of Economic Theory".
+%
+% Author: Shiro Takeda
+% Maintainer: Shiro Takeda
+% Copyright (C) 2001-2018 Shiro Takeda
+% First-written:       <2007/07/28>
+% Version: 2.7
+% Keywords: TeX, BibTeX, bst 
+% URL: https://github.com/ShiroTakeda/econ-bst
+
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% The Current Maintainer of this work is Shiro Takeda.
+
+% "econ-jet.bst" is a BibTeX style file for Journal fo Economic Theory.
+% "econ-jet.bst" is created from "econ.bst" which is distributed from
+% https://github.com/ShiroTakeda/econ-bst
+
+% Bug reports, requests and suggestions are welcome. 
+
+% For changelogs, see CHANGES.txt file.
+
+% version number
+FUNCTION {econ.version} { "2.7" }
+
+% File name
+FUNCTION {econ.file} { "econ-jet.bst" }
+
+% Debug mode. Non-zero makes debug mode on.
+FUNCTION {econ.debug}
+{ #0 }    % Debug mode off (default).
+% { #1 }    % Debug mode on.
+
+ENTRY
+  %%% Declaration of field
+  { access address author booktitle chapter doi edition editor howpublished
+    institution journal key month note number organization pages publisher
+    school series title type url volume year
+  % Fields specific to econ.bst
+    order absorder nameorder
+  }
+
+  % Definition of entry variable.  The entry variable is a variable which has
+  % different values according to different entries.
+  %% Integer entry variable:
+  { order.cited }
+
+  %% String entry variable
+  { label cyear flabel alabel extra.label sort.label sort.label.abb
+    extra.label.bysame nameorder.temp jname }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Use \bysame or not.
+%
+% If set to #0, \bysame is not used.
+% If set to #1, \bysame is used 
+% If set to #2, \bysame is used (alternative abbreviation style).
+%
+% Note that integer number is expressed as # + integer in bst file.
+% \bysame is the function that abbreviates succession of the same authors' name by ---.
+%
+% See econ-sample.pdf for details.
+% 
+FUNCTION {bst.use.bysame}
+{ #0 }    % Not use \bysame
+% { #1 }    % -> Use \bysame (default)
+% { #2 }    % -> Use \bysame of alternative style.
+
+% The definition of \bysame command.
+%
+FUNCTION {bst.bysame.definition}
+{ "\hskip.3em \leavevmode\rule[.5ex]{3em}{.3pt}\hskip0.5em" } % (default)
+% { "\leavevmode\hbox to\leftmargin{\hrulefill\,\,}" } % If you set #2 to bst.use.bysame, use this.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% The order of fist and last name.
+%
+FUNCTION {bst.author.name}
+% { #0 }    % (default)
+{ #1 }
+% { #2 }
+
+% Case of #0: First author -> last-first, other authors -> first-last. 
+% Fujita, Masahisa, Paul R. Krugman, and Anthony J. Venables. 
+
+% Case of #1: All authors -> last-first
+% Fujita, Masahisa, Krugman, Paul R., and Venables, Anthony J.
+
+% Case of #2: All authors -> first-last
+% Masahisa Fujita, Paul R. Krugman, and Anthony J. Venables.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Abbreviate first name of authors (editors):
+%
+FUNCTION {bst.first.name.initial}
+% { #0 }    % #0 -> full letters (default).
+{ #1 }    % Non-zero -> initial letter only.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Decapitalize of strings in title field.
+%
+FUNCTION {bst.title.lower.case}
+{ #0 }    % If #0, not decapitalize title (default).
+% { #1 }    % If non-#0, decapitalize title
+
+% Hide title filed.
+%
+FUNCTION {bst.hide.title}
+{ #0 }    % #0 -> Title field is displayed (default)
+% { #1 }    % Non-zer -> Title field is hidden 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide month.
+%
+FUNCTION {bst.hide.month}
+{ #0 }    % #0 -> show month field (default).
+% { #1 }    % non-#0 -> hide month field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Attach number index like plain.bst.
+%
+FUNCTION {bst.use.number.index}
+{ #0 }    % Not use number index (default).
+% { #1 }    % Non-#0 -> Use number index
+
+% The string before number index:
+%
+FUNCTION {bst.number.index.pre}
+{ "[" }    % (default)
+
+% The string after number index.  Adjustment is recommended.
+%
+FUNCTION {bst.number.index.post}
+{ "]\hskip1.0em " }    % (default)
+
+% Maximum digit of number index:
+% If the number of reference items >= 100, set 3 to this function.
+% If the number of reference items < 100, set 2 to this function.
+% If the number of reference items < 10, set 1 to this function.
+%
+FUNCTION {bst.number.index.digit}
+{ "2" }    % (default)
+% { "3" }
+
+% The functions below are used to adjust space and postion.  If you use fonts
+% other than computer modern fonts, you had better make adjustments.
+%
+% Setting for bst.number.index.digit = 1:
+FUNCTION {bst.number.index.bibhang.one}
+{ "2.05em" }    % (default)
+% Setting for bst.number.index.digit = 2:
+FUNCTION {bst.number.index.bibhang.ten}
+{ "2.55em" }    % (default)
+% Setting for bst.number.index.digit = 3:
+FUNCTION {bst.number.index.bibhang.hund}
+{ "3.05em" }    % (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Position of "year":
+%
+% You can choose the position of year by this function.
+%
+% If set to #0, year is placed right after "author".
+% If set to non-zero, year is placed at the end (before note field) except for
+% aritcle type entry. 
+%
+% In article type entry, the position of year changes according to the
+% following rule:
+% 
+% #1 -> year is placed at the end.
+% #2 -> year is placed after journal name in aritcle type entry.
+% #3 -> year is placed after volume in aritcle type entry.
+%
+FUNCTION {bst.year.position}
+{ #0 }    % (default).
+% { #1 }    % Last place before note.
+% { #2 }    % After journal name for aticle type entry.
+% { #3 }    % After volume for aticle type entry.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If 0, references are sorted by old documents -> recent documents.  If
+% non-zero, reverse order.
+FUNCTION {bst.reverse.year}
+{ #0 }    % Normal order (old -> recent) (default).
+% { #1 }    % inverse order (recent -> old)
+
+% If non-zero, sort references by using year field as the primary key
+% (chronological sorting).
+FUNCTION {bst.sort.year}
+{ #0 }    % Normal case: year is used as the sorting key next to author (default).
+% { #1 }    % year is used as the primary sorting key.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If non-zero, references are listed in citation order.
+%
+FUNCTION {bst.no.sort}
+{ #0 }    % (default)
+% { #1 }    % listed in citation order.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Non-zero -> sort references by entry type (article, book, incollection etc.)
+%
+FUNCTION {bst.sort.entry.type}
+{ #0 }    % #0 -> Normal (not sort references by entry type) (default).
+% { #1 }    % Non-zero -> sort references by entry type.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use absorder field to sort items.  Otherwise, ignore absorder field.
+%
+FUNCTION {bst.notuse.absorder.field}
+{ #0 }    % #0 -> Use absorder (default).
+% { #1 }    % Non-#0 -> Not use absorder.
+%
+% Order of priority to sort items
+% 
+% absorder -> author -> year -> order -> month -> title
+%
+% wehre absorder and order fields are specific to econ.bst.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use order field to sort items.  Otherwise, ignore order field.
+% Note: order field is specific to econ.bst.
+FUNCTION {bst.notuse.order.field}
+{ #0 }    % #0 -> Use order field (default).
+% { #1 }    % Non-#0 -> not use order field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%     and
+
+%%% String used to separate author names in references.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.and}
+{ ", " }
+% { " and " }    % (default)
+
+%%% String used to separate author names in references (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.ands}
+{ ", " }
+% { ", and " }    % (default)
+
+%%% String used to separate author names in citation part.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.cite.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in citation part (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.cite.ands}
+{ " and " }    % (default)
+
+%%% If you want to use random author order for some bibliography entries, set
+% non-zero to this function.
+% 
+FUNCTION {bst.use.nameorder}
+{ #1 }	% Use random order (default)
+% { #0 }	% Not use random order
+
+%%% String used to separate author names in references for the entry of random
+% author order.
+%
+FUNCTION {bst.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+%%% String used to separate author names in citation part for the entry of
+% random author order
+%
+FUNCTION {bst.cite.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Author names in the citation part are abbreviated by et al. if the number of
+% authors is greater or equal to bst.and.others.num.
+FUNCTION {bst.and.others.num}
+{ #3 }    % If the number of authors is greater or equal to three (default).
+
+% If the number of authors is greater or equal to bst.max.author.num, only
+% first author is listed and other authors' names are abbreviated as "et al.".
+FUNCTION {bst.max.author.num}
+{ #12 }    % If the number of authors is greater or equal to 12 (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Strings used when abbreviating multiple-authors in citation part.
+FUNCTION {bst.and.others}
+{ " et~al." }    % (default)
+
+% Strings used when abbreviating multiple-authors in citation part for entries
+% with random author order.
+FUNCTION {bst.and.others.nameorder}
+{ " \textcircled{r}~al." }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       author 
+
+% The string before author:
+%
+FUNCTION {bst.author.pre}
+{ "" }    % (default)
+
+% The string after author:
+%
+FUNCTION {bst.author.post}
+{ "," }
+% { "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       year
+
+% The string before year only for aritcle type entry.
+%
+FUNCTION {bst.year.pre}
+{ ", " }
+% { " (" }    % (default)
+
+% The string after year only for aritcle type entry.
+%
+FUNCTION {bst.year.post}
+{ ". " }
+% { ") " }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.pre}
+{ ", " }
+% { " (" }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.post}
+{ ". " }
+% { ") " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       title (except for title in book)
+
+% The string before title:
+%
+FUNCTION {bst.title.pre}
+{ "" }
+% { "``" }    % (default)
+
+% The string after title:
+%
+FUNCTION {bst.title.post}
+{ "." }
+% { ",''" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       tile for book:
+
+% The string before book title:
+%
+FUNCTION {bst.book.pre}
+{ " " }
+% { " \textit{" }    % (default)
+
+% The string after book title:
+%
+FUNCTION {bst.book.post}
+{ "." }
+% { "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       booktitle
+
+% The string before booktitle:
+%
+FUNCTION {bst.btitle.pre}
+{ " " }
+% { " \textit{" }    % (default)
+
+% The string after booktitle:
+%
+FUNCTION {bst.btitle.post}
+{ "" }
+% { "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       journal name
+
+% The string before journal name:
+%
+FUNCTION {bst.journal.pre}
+{ " " }
+% { " \textit{" }    % (default)
+
+% The string after journal name:
+%
+FUNCTION {bst.journal.post}
+% { "}" }    % (default)
+{ "" }
+
+% Use the abbreviated journal name
+%
+% If set to #0, do not use abbreviated journal name.
+% If set to non-#0, use abbreviated journal name.
+%
+FUNCTION {bst.journal.name.abb}
+% { #0 }    % (default)
+{ #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       editor notation:
+
+% The string that indicates multiple editors:
+%
+FUNCTION {bst.editors}
+{ " eds. " }    % (default)
+
+% The string that indicates single editor:
+%
+FUNCTION {bst.editor}
+{ " ed. " }    % (default)
+
+% Order of editor and booktitle in incollection and inproceedings entries.
+%
+% If set to #0: 	editors -> booktitle order
+% If set to non-zero:	booktitle -> editors order
+%
+FUNCTION {bst.editor.btitle.order}
+{ #0 }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       edition
+
+% The string before edition:
+%
+FUNCTION {bst.edition.pre}
+{ ", " }    % (default)
+
+% The string after edition:
+%
+FUNCTION {bst.edition.post}
+{ " edition" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       volume
+
+% The string before volume:
+%
+FUNCTION {bst.volume.pre}
+{ ". " }
+% { ", " }    % (default)
+
+% The string after volume:
+%
+FUNCTION {bst.volume.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       number
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide number.  If non-zero, number is suppressed. 
+FUNCTION {bst.hide.number}
+{ #0 }    % #0 -> show number field (default)
+% { #1 }    % non-#0 -> Hide number field.
+
+% The string before number:
+%
+FUNCTION {bst.number.pre}
+{ " (" }    % (default)
+
+% The string after number:
+%
+FUNCTION {bst.number.post}
+{ ")" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       in 
+
+% In
+%
+FUNCTION {bst.in}
+{ " in " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       page
+
+% The string before page (multiple pages):
+%
+FUNCTION {bst.pages.pre}
+{ ", " }    % (default)
+
+% The string before page:
+%
+FUNCTION {bst.page.pre}
+{ ", " }    % (default)
+
+% The string after page (multiple pages):
+%
+FUNCTION {bst.pages.post}
+{ "" }    % (default)
+
+% The string after page:
+%
+FUNCTION {bst.page.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       chapter
+
+% The string before chapter:
+%
+FUNCTION {bst.chapter.pre}
+{ ", Chap." }    % (default)
+
+% The string after chapter:
+%
+FUNCTION {bst.chapter.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       month
+
+% The string before month:
+%
+FUNCTION {bst.month.pre}
+{ ", " }    % (default)
+
+% The string after month:
+%
+FUNCTION {bst.month.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       address
+% The string before address:
+%
+FUNCTION {bst.address.pre}
+{ ", " }    % (default)
+
+% The string after address:
+%
+FUNCTION {bst.address.post}
+{ "" }    % (default)
+
+% You can choose the order of address and publisher by this function.
+%
+% If #0,	address -> publisher order (the default value).
+% If non-zero,	publisher -> address order.
+
+FUNCTION {bst.address.position}
+{ #0 }    % Address is placed before publisher (default)
+% { #1 }    % Address is placed after publisher 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       publisher
+
+% The string before publisher:
+%
+FUNCTION {bst.publisher.pre}
+{ ": " }    % (default)
+
+% The string after publisher:
+%
+FUNCTION {bst.publisher.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       series
+
+% The string before series:
+%
+FUNCTION {bst.series.pre}
+{ ", " }    % (default)
+
+% The string after series:
+%
+FUNCTION {bst.series.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       organization
+
+% The string before organization:
+%
+FUNCTION {bst.organization.pre}
+{ ", " }    % (default)
+
+% The string after organization:
+%
+FUNCTION {bst.organization.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       school
+
+% The string before school:
+%
+FUNCTION {bst.school.pre}
+{ ", " }    % (default)
+
+% The string after school:
+%
+FUNCTION {bst.school.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       institution
+
+% The string before institution:
+%
+FUNCTION {bst.institution.pre}
+{ ", " }    % (default)
+
+% The string after institution:
+%
+FUNCTION {bst.institution.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       howpublished
+
+% The string before howpublished:
+%
+FUNCTION {bst.howpublished.pre}
+{ " " }    % (default)
+
+% The string after howpublished:
+%
+FUNCTION {bst.howpublished.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       url
+
+% Show or Hide url.  If non-zero, url is displayed. Otherwise, url is suppressed. 
+FUNCTION {bst.show.url}
+{ #1 }    % non-#0 -> Show url field (default)
+% { #0 }    % #0 -> Not show url field.
+
+% The string before url:
+%
+FUNCTION {bst.url.pre}
+{ ", \url{" }
+% { ", URL: \url{" }	% (default)
+
+% The string after url:
+%
+FUNCTION {bst.url.post}
+{ "}" }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Access
+
+% This setting is valid only if there are "access" field in bib
+% files. The value of access field indicates accessed date for URL.
+
+% The string before access.
+FUNCTION {bst.access.pre}
+{ ", accessed on " } % (default)
+
+% The string after access.
+FUNCTION {bst.access.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       DOI (digital object identifier)
+
+% This setting is valid only if there are "doi" field in bib files.
+
+% Show or Hide DOI.  If non-zero, DOI is displayed. Otherwise, DOI is suppressed. 
+FUNCTION {bst.show.doi}
+{ #1 }    % non-#0 -> Show DOI field (default)
+% { #0 }    % #0 -> Not show DOI field.
+
+% The string before DOI:
+%
+FUNCTION {bst.doi.pre}
+{ ", \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * } % (default)
+
+% The string after DOI:
+%
+FUNCTION {bst.doi.post}
+{ "}}" }	   % (default)
+
+% How to show URL and DOI fields when both fields exist.
+%
+% #0 -> Both fields are displayed
+% #1 -> Only URL field is displayed
+% #2 -> Only DOI field is displayed
+%
+FUNCTION {bst.url.doi}
+% { #0 }    % -> Both fields are displayed
+% { #1 }    % -> Only URL field is displayed
+{ #2 }    % (default) --> Only DOI field is displayed 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Other functions:
+
+% The string before note.
+FUNCTION {bst.note.pre}
+{ ", " }    % (default)
+
+% The string after note.
+FUNCTION {bst.note.post}
+{ "" }    % (default)
+
+% The string that represents Technical report:
+%
+FUNCTION {bst.techrep}
+{ "Technical Report" }    % (default)
+
+% The string that represents master thesis:
+%
+FUNCTION {bst.mthesis}
+{ " Master's thesis" }    % (default)
+
+% The string that represents phd thesis:
+%
+FUNCTION {bst.phdthesis}
+{ " Ph.D. dissertation" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization end here:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FUNCTION {bst.first}
+{ "1st" }
+
+FUNCTION {bst.second}
+{ "2nd" }
+
+FUNCTION {bst.third}
+{ "3rd" }
+
+FUNCTION {bst.fourth}
+{ "4th" }
+
+FUNCTION {bst.fifth}
+{ "5th" }
+
+FUNCTION {bst.st}
+{ "st" }
+
+FUNCTION {bst.nd}
+{ "nd" }
+
+FUNCTION {bst.rd}
+{ "rd" }
+
+FUNCTION {bst.th}
+{ "th" }
+
+%%%%% memo by Takeda
+
+% "a" 'b := indicates substituting string "a" for variable b.
+
+% Integer number #0, #1,...
+
+%%% Function definition:
+%
+% FUNCTION {name}
+% { 's :=
+%
+% }
+%
+% This is the definition of a function named "name".   The function "name" is
+% used in the following way 
+%
+% "foo" name
+% "foo" is an argument for the function "name".
+%
+% About the definition of a function with more than two arguments, see the
+% definition of "chop.word".
+
+%%% Declaration of variables:
+
+%% String global variables:
+STRINGS { s t tt }
+STRINGS { year.num }
+STRINGS { preone preten }
+STRINGS { last.sort.label next.extra prev.author prev.author.aer this.author }
+STRINGS { hang }
+STRINGS { item.type }
+STRINGS { tempa tempb }
+
+%% Integer global variables:
+INTEGERS { nameptr namesleft numnames name.num }
+INTEGERS { multiresult }
+INTEGERS { index }
+INTEGERS { len }
+INTEGERS { last.extra.num }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+INTEGERS { last.period.comma }
+INTEGERS { len1.aer len2.aer i.aer }
+
+%%% Definition of functions:
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+
+%%% Initialize variables:
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+
+%%% Remove comma and add period:
+%
+%%%
+FUNCTION {add.period.x}
+{ duplicate$
+  #-1 #1 substring$ "," =
+    { #-2 global.max$ substring$ "." * }
+    { duplicate$
+      #-1 #2 substring$ ". " =
+        { #-3 global.max$ substring$ "." * }
+        { duplicate$
+          #-1 #2 substring$ ", " =
+            { #-3 global.max$ substring$ "." * }
+            { duplicate$
+              #-1 #2 substring$ ",'" =
+                { #-3 global.max$ substring$ ".'" * }
+                { duplicate$
+                  #-1 #2 substring$ ".'" =
+                    { #-3 global.max$ substring$ ".'" * }
+                    { duplicate$
+                      #-1 #2 substring$ ".~" =
+                        { #-3 global.max$ substring$ ".~" * }
+                        { duplicate$
+                          #-1 #2 substring$ ",~" =
+                            { #-3 global.max$ substring$ ".~" * }
+                            { duplicate$
+                              #-1 #3 substring$ ",''" =
+                                { #-4 global.max$ substring$ ".''" * }
+                                { duplicate$
+                                  #-1 #3 substring$ ".''" =
+                                    { #-4 global.max$ substring$ ".''" * }
+                                    { add.period$ }
+                                  if$
+                                }
+                              if$
+                            }
+                          if$
+                        }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {output.nonnull}
+{ 's :=
+  % mid.sentence
+  output.state mid.sentence =
+    { ", " * write$ }
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period.x " " * write$ }
+          if$
+        }
+      if$
+      % not mid.sentence, set to mid.sentence
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+
+%%% If the last character is period or comma, set non-zero to
+%%% last.period.comma.
+FUNCTION {period.comma.p}
+{ duplicate$ 't :=
+  t #-1 #1 substring$ "." = 
+  t #-1 #1 substring$ "," = or
+  t #-1 #1 substring$ ":" = or 
+  t #-1 #2 substring$ ".'" = or
+  t #-1 #2 substring$ ",'" = or
+  t #-1 #3 substring$ ".''" = or
+  t #-1 #3 substring$ ",''" = or
+  t #-1 #2 substring$ ".~" = or
+  t #-1 #2 substring$ ",~" = or
+    { #1 'last.period.comma := }
+    { #0 'last.period.comma := }
+  if$
+}
+
+%%% remove unnecessary comma.
+FUNCTION {remove.pre.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #1 #1 substring$ "," = 
+       { s #2 global.max$ substring$ }
+       { s #1 #1 substring$ "." = 
+          { s #2 global.max$ substring$ }
+          's
+         if$
+       }
+      if$
+    }
+  if$
+}
+
+%%% output.nonnull.nocomma is the same as output.nonnull except that it does
+%%% not add commas even in mid.sentence.
+FUNCTION {output.nonnull.nocomma}
+{ 's :=
+  output.state mid.sentence =
+    % mid.sentence
+    { period.comma.p "" * write$ }
+
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  last.period.comma #0 =
+    { s }
+    { s remove.pre.comma }
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output}
+% { duplicate$ empty$
+%     'pop$
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.nocomma}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull.nocomma
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output.check}
+% { 't :=
+%   duplicate$ empty$
+%     { pop$ "empty " t * " in " * cite$ * warning$ }
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.check.nocomma}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull.nocomma
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Format in bbl file:
+
+% \harvarditem[Brezis et~al.]{Brezis, Krugman and
+%   Tsiddon}{1993}{brezis93:_leapf_inter_compet}
+% Brezis, Elise~S., Paul~R. Krugman, and Daniel Tsiddon  (1993) ``Leapfrogging in
+%   International Competition: A Theory of Cycles in National Technological
+%   Leadership.'', {\em American Economic Review.}, Vol.~83. No.~5. pp.
+%   1211--1219.
+
+% \harvarditem[abbreviated citation]{full citation}{year}{keyword} ...
+
+%%% Add period and newline.
+FUNCTION {fin.entry}
+{ add.period.x
+  write$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+
+FUNCTION {new.block.check}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+
+%%% booktitle
+FUNCTION {format.btitle}
+{ booktitle empty$
+    { "" }
+    { bst.btitle.pre booktitle * bst.btitle.post * }
+  if$
+}
+
+FUNCTION {journal.name.sub}
+{ 't :=
+  t #1 #4 substring$ "The " =
+    % Use #30 to handle with the long journal name.
+    { t #5 #30 substring$ 't := }
+    'skip$
+  if$
+  t
+}
+
+FUNCTION {format.journal.name.abb}
+{ journal 's :=
+  journal 'jname :=
+  s journal.name.sub 's :=
+  bst.journal.name.abb #0 =
+    'skip$
+    { 
+       s "Academic Management Review" =
+        { "Acad. Manage. J." 'jname := }
+        'skip$
+      if$
+      s "Academy of Management Journal" =
+        { "Acad. Manage. Rev." 'jname := }
+        'skip$
+      if$
+      s "Accounting Review" =
+        { "Account. Rev." 'jname := }
+        'skip$
+      if$
+      s "Accounting, Organizations and Society" =
+        { "Account. Org. Soc." 'jname := }
+        'skip$
+      if$
+      s "Accounting, Organizations and Society" =
+        { "Admin. Sci. Quart." 'jname := }
+        'skip$
+      if$
+      s "Administrative Science Quarterly" =
+        { "Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Applied Economics" =
+        { "Am. Econ. J. Appl. Econ." 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Economic Policy" =
+        { "Am. Econ. J. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Macroeconomics" =
+        { "Am. Econ. J. Macro." 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Microeconomics" =
+        { "Am. Econ. J. Micro." 'jname := }
+        'skip$
+      if$
+      s "American Economic Review" =
+        { "Am. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "American Journal of Agricultural Economics" =
+        { "Am. J. Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "American Journal of Economics and Sociology" =
+        { "Am. J. Econ. Sociol." 'jname := }
+        'skip$
+      if$
+      s "Applied Economics" =
+        { "Appl. Econ." 'jname := }
+        'skip$
+      if$
+      s "Applied Economics Letters" =
+        { "Appl. Econ. Lett." 'jname := }
+        'skip$
+      if$
+      s "Applied Energy" =
+        { "Appl. Energ." 'jname := }
+        'skip$
+      if$
+      s "Applied Stochastic Models in Business and Industry" =
+        { "Appl. Stoch. Model Bus." 'jname := }
+        'skip$
+      if$
+      s "Auditing: A Journal of Practise and Theory" =
+        { "Auditing.-J. Pract. Th." 'jname := }
+        'skip$
+      if$
+      s "Australian Journal of Agricultural and Resource Economics" =
+        { "Aust. J. Agr. Resour. Ec." 'jname := }
+        'skip$
+      if$
+      s "B.E. Journal of Economic Analysis \& Policy" =
+        { "B.E. J. Econ. Anal. Policy" 'jname := }
+        'skip$
+      if$
+      s "Betriebswirtschaftliche Forschung Und Praxis" =
+        { "Betrieb. Forsch. Prax." 'jname := }
+        'skip$
+      if$
+      s "British Journal of Industrial Relations" =
+        { "Brit. J. Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "British Journal of Management" =
+        { "Brit. J. Manage." 'jname := }
+        'skip$
+      if$
+      s "Bulletin of Indonesian Economic Studies" =
+        { "B. Indones. Econ. Stud." 'jname := }
+        'skip$
+      if$
+      s "Business Ethics Quarterly" =
+        { "Bus. Ethics Q." 'jname := }
+        'skip$
+      if$
+      s "Business History" =
+        { "Bus. Hist." 'jname := }
+        'skip$
+      if$
+      s "Business History Review" =
+        { "Bus. Hist. Rev." 'jname := }
+        'skip$
+      if$
+      s "Business Lawyer" =
+        { "Bus. Lawyer" 'jname := }
+        'skip$
+      if$
+      s "California Management Review" =
+        { "Calif. Manage. Rev." 'jname := }
+        'skip$
+      if$
+      s "Cambridge Journal of Economics" =
+        { "Cambridge J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Canadian Journal of Administrative Sciences" =
+        { "Can. J. Adm. Sci." 'jname := }
+        'skip$
+      if$
+      s "Canadian Journal of Economics" =
+        { "Can. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "China Economic Review" =
+        { "China. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "Climate Change Economics" =
+        { "Clim. Change Econ." 'jname := }
+        'skip$
+      if$
+      s "Climate Policy" =
+        { "Clim. Policy" 'jname := }
+        'skip$
+      if$
+      s "Communications in Statistics – Part A: Theory and Methods" =
+        { "Commun. Stat.-Theor. M." 'jname := }
+        'skip$
+      if$
+      s "Computational Economics" =
+        { "Computation. Econ." 'jname := }
+        'skip$
+      if$
+      s "Computational Statistics" =
+        { "Computation. Stat." 'jname := }
+        'skip$
+      if$
+      s "Computational Statistics and Data Analysis" =
+        { "Comput. Stat. Data An." 'jname := }
+        'skip$
+      if$
+      s "Contemporary Accounting Research" =
+        { "Contemp. Account. Res." 'jname := }
+        'skip$
+      if$
+      s "Contemporary Economic Policy" =
+        { "Contemp. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Defence and Peace Economics" =
+        { "Defence Peace Econ." 'jname := }
+        'skip$
+      if$
+      s "Development Economics" =
+        { "Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Eastern European Economics" =
+        { "Eastern Eur. Econ." 'jname := }
+        'skip$
+      if$
+      s "Ecological Economics" =
+        { "Ecol. Econ." 'jname := }
+        'skip$
+      if$
+      s "Econometric Theory" =
+        { "Economet. Theor." 'jname := }
+        'skip$
+      if$
+      s "Econometrica" =
+        { "Econometrica" 'jname := }
+        'skip$
+      if$
+      s "Economic and Industrial Democracy" =
+        { "Econ. Ind. Democr." 'jname := }
+        'skip$
+      if$
+      s "Economic Development and Cultural Change" =
+        { "Econ. Dev. Cult. Change" 'jname := }
+        'skip$
+      if$
+      s "Economic Development and Cultural Change" =
+        { "Economist.-Netherland" 'jname := }
+        'skip$
+      if$
+      s "Economic Development Quarterly" =
+        { "Econ. Dev. Q." 'jname := }
+        'skip$
+      if$
+      s "Economic Geography" =
+        { "Econ. Geogr." 'jname := }
+        'skip$
+      if$
+      s "Economic History Review" =
+        { "Econ. Hist. Rev." 'jname := }
+        'skip$
+      if$
+      s "Economic Inquiry" =
+        { "Econ. Inq." 'jname := }
+        'skip$
+      if$
+      s "Economic Journal" =
+        { "Econ. J." 'jname := }
+        'skip$
+      if$
+      s "Economic Modelling" =
+        { "Econ. Model." 'jname := }
+        'skip$
+      if$
+      s "Economic Policy" =
+        { "Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Economic Record" =
+        { "Econ. Rec." 'jname := }
+        'skip$
+      if$
+      s "Economic Theory" =
+        { "Econ. Theor." 'jname := }
+        'skip$
+      if$
+      s "Economica" =
+        { "Economica" 'jname := }
+        'skip$
+      if$
+      s "Economics and Philosophy" =
+        { "Econ. Philos." 'jname := }
+        'skip$
+      if$
+      s "Economics Letters" =
+        { "Econ. Lett." 'jname := }
+        'skip$
+      if$
+      s "Economics of Education Review" =
+        { "Econ. Educ. Rev." 'jname := }
+        'skip$
+      if$
+      s "Economics of Energy \& Environmental Policy" =
+        { "Econ. Energ. Environ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Economics of Transition" =
+        { "Econ. Transit." 'jname := }
+        'skip$
+      if$
+      s "Economy and Society" =
+        { "Econ. Soc." 'jname := }
+        'skip$
+      if$
+      s "Ekonomicky Casopis" =
+        { "Ekon. Cas." 'jname := }
+        'skip$
+      if$
+      s "Ekonomiska Samfundets Tidskrift" =
+        { "Ekon. Samf. Tidskr." 'jname := }
+        'skip$
+      if$
+      s "Emerging Markets Finance and Trade" =
+        { "Emerg. Mark. Financ. Tr." 'jname := }
+        'skip$
+      if$
+      s "Energy Economics" =
+        { "Energ. Econ." 'jname := }
+        'skip$
+      if$
+      s "Energy Journal" =
+        { "Energ. J." 'jname := }
+        'skip$
+      if$
+      s "Energy Policy" =
+        { "Energ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Entrepreneurship \& Regional Development" =
+        { "Entrep. Region. Dev." 'jname := }
+        'skip$
+      if$
+      s "Entrepreneurship Theory and Practice" =
+        { "Entrep. Theory Pract." 'jname := }
+        'skip$
+      if$
+      s "Environment and Development Economics" =
+        { "Environ. Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Environmental and Resource Economics" =
+        { "Environ. Resour. Econ." 'jname := }
+        'skip$
+      if$
+      s "Environmental Economics and Policy Studies" =
+        { "Environ. Econ. Policy Stud." 'jname := }
+        'skip$
+      if$
+      s "Environmental Science and Policy" =
+        { "Environ. Sci. Policy" 'jname := }
+        'skip$
+      if$
+      s "Environmental Science \& Technology" =
+        { "Environ. Sci. Technol." 'jname := }
+        'skip$
+      if$
+      s "Eurasian Geography and Economics " =
+        { "Eurasian Geogr. Econ." 'jname := }
+        'skip$
+      if$
+      s "European Economic Review" =
+        { "Eur. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "European Journal of Industrial Relations" =
+        { "Eur. J. Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "European Review of Agricultural Economics" =
+        { "Eur. Rev. Agric. Econ." 'jname := }
+        'skip$
+      if$
+      s "Europe-Asia Studies" =
+        { "Europe-Asia Stud." 'jname := }
+        'skip$
+      if$
+      s "Explorations in Economic History" =
+        { "Explor. Econ. Hist." 'jname := }
+        'skip$
+      if$
+      s "Feminist Economics" =
+        { "Fem. Econ." 'jname := }
+        'skip$
+      if$
+      s "Finance a Uver" =
+        { "Financ. Uver." 'jname := }
+        'skip$
+      if$
+      s "Finance and Stochastics" =
+        { "Financ. Stoch." 'jname := }
+        'skip$
+      if$
+      s "Financial Analysts Journal" =
+        { "Financ. Anal. J." 'jname := }
+        'skip$
+      if$
+      s "Financial Management" =
+        { "Financ. Manage." 'jname := }
+        'skip$
+      if$
+      s "Fiscal Studies" =
+        { "Fisc. Stud." 'jname := }
+        'skip$
+      if$
+      s "Food Policy" =
+        { "Food. Policy." 'jname := }
+        'skip$
+      if$
+      s "Futures" =
+        { "Futures" 'jname := }
+        'skip$
+      if$
+      s "Games and Economic Behavior" =
+        { "Game Econ. Behav." 'jname := }
+        'skip$
+      if$
+      s "Health Economics" =
+        { "Health Econ." 'jname := }
+        'skip$
+      if$
+      s "Hitotsubashi Journal of Economics" =
+        { "Hitotsub. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "IMF Staff Papers" =
+        { "Imf. Staff. Papers" 'jname := }
+        'skip$
+      if$
+      s "Industrial and Corporate Change" =
+        { "Ind. Corp. Change" 'jname := }
+        'skip$
+      if$
+      s "Industrial and Labor Relations Review" =
+        { "Ind. Labor. Relat. Rev." 'jname := }
+        'skip$
+      if$
+      s "Industrial Marketing Management" =
+        { "Ind. Market Manag." 'jname := }
+        'skip$
+      if$
+      s "Industrial Relations" =
+        { "Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "Information Economics and Policy" =
+        { "Info. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Insurance: Mathematics and Economics" =
+        { "Insur. Math. Econ." 'jname := }
+        'skip$
+      if$
+      s "International Economic Review" =
+        { "Int. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Electronics and Telecommunications" =
+        { "Int. J. Electron. Comm." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Economic Theory" =
+        { "Int. J. Econ. Theory" 'jname := }
+        'skip$
+      if$
+      s "International Journal of Finance \& Economics" =
+        { "Int. J. Financ. Econ." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Forecasting" =
+        { "Int. J. Forecast." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Game Theory" =
+        { "Int. J. Game. Theory" 'jname := }
+        'skip$
+      if$
+      s "International Journal of Industrial Organization" =
+        { "Int. J. Ind. Organ." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Manpower" =
+        { "Int. J. Manpow." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Market Research" =
+        { "Int. J. Market Res." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Research in Marketing" =
+        { "Int. J. Res. Mark." 'jname := }
+        'skip$
+      if$
+      s "International Labour Review" =
+        { "Int. Labour Rev." 'jname := }
+        'skip$
+      if$
+      s "International Marketing Review" =
+        { "Int. Market. Rev." 'jname := }
+        'skip$
+      if$
+      s "International Review of Applied Economics" =
+        { "Int. Rev. Appl. Econ." 'jname := }
+        'skip$
+      if$
+      s "International Review of Law and Economics" =
+        { "Int. Rev. Law Econ." 'jname := }
+        'skip$
+      if$
+      s "International Small Business Journal" =
+        { "Int. Small. Bus. J." 'jname := }
+        'skip$
+      if$
+      s "International Tax and Public Finance" =
+        { "Int. Tax Public Finan." 'jname := }
+        'skip$
+      if$
+      s "Jahrbücher für Nationalökonomie und Statistik" =
+        { "Jahrb. Natl. Stat." 'jname := }
+        'skip$
+      if$
+      s "Japan and the World Economy" =
+        { "Jpn. World Econ." 'jname := }
+        'skip$
+      if$
+      s "Japanese Economic Review" =
+        { "Jpn. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "JCMS-journal of Common Market Studies" =
+        { "Jcms.-J. Common. Mark. S." 'jname := }
+        'skip$
+      if$
+      s "Journal of Accounting and Economics" =
+        { "J. Account. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Accounting Research" =
+        { "J. Account. Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Advertising" =
+        { "J. Advertising" 'jname := }
+        'skip$
+      if$
+      s "Journal of Advertising Research" =
+        { "J. Advertising Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of African Economies" =
+        { "J. Afr. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Agricultural and Resource Economics" =
+        { "J. Agr. Resour. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Agricultural Economics" =
+        { "J. Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Applied Econometrics" =
+        { "J. Appl. Econom." 'jname := }
+        'skip$
+      if$
+      s "Journal of Banking and Finance" =
+        { "J. Bank Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business" =
+        { "J. Bus." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business and Economic Statistics" =
+        { "J. Bus. Econ. Stat." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business and Psychology" =
+        { "J. Bus. Psychol." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business and Technical Communication" =
+        { "J. Bus. Tech. Commun." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business Ethics" =
+        { "J. Bus. Ethics" 'jname := }
+        'skip$
+      if$
+      s "Journal of Business Research" =
+        { "J. Bus. Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business Venturing" =
+        { "J. Bus. Venturing." 'jname := }
+        'skip$
+      if$
+      s "Journal of Cleaner Productiond" =
+        { "J. Clean. Prod." 'jname := }
+        'skip$
+      if$
+      s "Journal of Comparative Economics" =
+        { "J. Comp. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Consumer Affairs" =
+        { "J. Consum. Aff." 'jname := }
+        'skip$
+      if$
+      s "Journal of Consumer Research" =
+        { "J. Consum. Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Corporate Finance" =
+        { "J. Corp. Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Development Economics" =
+        { "J. Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Econometrics" =
+        { "J. Econometrics" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Behavior and Organization" =
+        { "J. Econ. Behav. Organ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Dynamics and Control" =
+        { "J. Econ. Dyn. Control" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Education" =
+        { "J. Econ. Educ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Geography" =
+        { "J. Econ. Geogr." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Growth" =
+        { "J. Econ. Growth" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic History" =
+        { "J. Econ. Hist." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Integration" =
+        { "J. Econ. Integr." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Issues" =
+        { "J. Econ. Issues." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Perspectives" =
+        { "J. Econ. Perspect." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Psychology" =
+        { "J. Econ. Psychol." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Literature" =
+        { "J. Econ. Lit." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Surveys" =
+        { "J. Econ. Surv." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Theory" =
+        { "J. Econ. Theory" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economics" =
+        { "J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economics and Management Strategy" =
+        { "J. Econ. Manage. Strat." 'jname := }
+        'skip$
+      if$
+      s "Journal of Environmental Economics and Management" =
+        { "J. Environ. Econ. Manag." 'jname := }
+        'skip$
+      if$
+      s "Journal of Evolutionary Economics" =
+        { "J. Evol. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Finance" =
+        { "J. Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial and Quantitative Analysis" =
+        { "J. Financ. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial Economics" =
+        { "J. Financ. Intermed." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial Intermediation" =
+        { "J. Financ. Mark." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial Markets" =
+        { "J. Financ. Quant. Anal." 'jname := }
+        'skip$
+      if$
+      s "Journal of Forecasting" =
+        { "J. Forecasting." 'jname := }
+        'skip$
+      if$
+      s "Journal of Futures Markets" =
+        { "J. Futures Market" 'jname := }
+        'skip$
+      if$
+      s "Journal of Health Economics" =
+        { "J. Health Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Housing Economics" =
+        { "J. Hous. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Human Resources" =
+        { "J. Hum. Resour." 'jname := }
+        'skip$
+      if$
+      s "Journal of Industrial Economics" =
+        { "J. Ind. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Institutional and Theoretical Economics" =
+        { "J. Inst. Theor. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Integrated Disaster Risk Management" =
+        { "J. Integr. Disaster Risk Manag." 'jname := }
+        'skip$
+      if$
+      s "Journal of International Business Studies" =
+        { "J. Int. Bus. Stud." 'jname := }
+        'skip$
+      if$
+      s "Journal of International Economics" =
+        { "J. Int. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of International Marketing" =
+        { "J. Int. Marketing" 'jname := }
+        'skip$
+      if$
+      s "Journal of International Money and Finance" =
+        { "J. Int. Money Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Labor Economics" =
+        { "J. Labor Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Labor Research" =
+        { "J. Labor Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Law and Economics" =
+        { "J. Law. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Law, Economics, and Organization" =
+        { "J. Law. Econ. Organ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Macroeconomics" =
+        { "J. Macroecon." 'jname := }
+        'skip$
+      if$
+      s "Journal of Management" =
+        { "J. Manage." 'jname := }
+        'skip$
+      if$
+      s "Journal of Management Studies" =
+        { "J. Manage. Stud." 'jname := }
+        'skip$
+      if$
+      s "Journal of Marketing" =
+        { "J. Marketing" 'jname := }
+        'skip$
+      if$
+      s "Journal of Marketing Research" =
+        { "J. Marketing Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Mathematical Economics" =
+        { "J. Math. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Media Economics" =
+        { "J. Media Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Monetary Economics" =
+        { "J. Monetary. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Money, Credit and Banking" =
+        { "J. Money Credit Bank." 'jname := }
+        'skip$
+      if$
+      s "Journal of Policy Modeling" =
+        { "J. Policy Model." 'jname := }
+        'skip$
+      if$
+      s "Journal of Political Economy" =
+        { "J. Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Population Economics" =
+        { "J. Popul. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Portfolio Management" =
+        { "J. Portfolio Manage." 'jname := }
+        'skip$
+      if$
+      s "Journal of Post Keynesian Economics" =
+        { "J. Post Keynesian Ec." 'jname := }
+        'skip$
+      if$
+      s "Journal of Product Innovation Management" =
+        { "J. Prod. Innovat. Manag." 'jname := }
+        'skip$
+      if$
+      s "Journal of Productivity Analysis" =
+        { "J. Prod. Anal." 'jname := }
+        'skip$
+      if$
+      s "Journal of Public Economics" =
+        { "J. Public Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Public Policy and Marketing" =
+        { "J. Public Policy Mark." 'jname := }
+        'skip$
+      if$
+      s "Journal of Real Estate Finance and Economics" =
+        { "J. Real Estate Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Regulatory Economics" =
+        { "J. Regul. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Retailing" =
+        { "J. Retailing" 'jname := }
+        'skip$
+      if$
+      s "Journal of Risk and Insurance" =
+        { "J. Risk. Insur" 'jname := }
+        'skip$
+      if$
+      s "Journal of Risk and Uncertainty" =
+        { "J. Risk Uncertainty" 'jname := }
+        'skip$
+      if$
+      s "Journal of Statistical Computation and Simulation" =
+        { "J. Stat. Comput. Sim." 'jname := }
+        'skip$
+      if$
+      s "Journal of Statistical Planning and Inference" =
+        { "J. Stat. Plan. Infer." 'jname := }
+        'skip$
+      if$
+      s "Journal of the Academy of Marketing Science" =
+        { "J. Acad. Market. Sci." 'jname := }
+        'skip$
+      if$
+      s "Journal of the American Statistical Association" =
+        { "J. Am. Stat. Assoc." 'jname := }
+        'skip$
+      if$
+      s "Journal of the European Economic Association" =
+        { "J. Eur. Econ. Assoc." 'jname := }
+        'skip$
+      if$
+      s "Journal of the Japanese and International Economies" =
+        { "J. Jpn. Int. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Time Series Analysis" =
+        { "J. Time Ser. Anal." 'jname := }
+        'skip$
+      if$
+      s "Journal of Transport Economics and Policy" =
+        { "J. Transp. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Journal of Urban Economics" =
+        { "J. Urban Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of World Business" =
+        { "J. World. Bus." 'jname := }
+        'skip$
+      if$
+      s "Kyklos" =
+        { "Kyklos" 'jname := }
+        'skip$
+      if$
+      s "Labor History" =
+        { "Labor Hist." 'jname := }
+        'skip$
+      if$
+      s "Labour Economics" =
+        { "Labour Econ." 'jname := }
+        'skip$
+      if$
+      s "Land Economics" =
+        { "Land Econ." 'jname := }
+        'skip$
+      if$
+      s "Long Range Planning" =
+        { "Long Range Plann." 'jname := }
+        'skip$
+      if$
+      s "Macroeconomic Dynamics" =
+        { "Macroecon. Dyn." 'jname := }
+        'skip$
+      if$
+      s "Management Science" =
+        { "Manage. Sci." 'jname := }
+        'skip$
+      if$
+      s "Manchester School" =
+        { "Manch. Sch." 'jname := }
+        'skip$
+      if$
+      s "Marketing Letters" =
+        { "Market. Lett." 'jname := }
+        'skip$
+      if$
+      s "Marketing Science" =
+        { "Market. Sci." 'jname := }
+        'skip$
+      if$
+      s "Materials Transactions" =
+        { "Mater. Trans." 'jname := }
+        'skip$
+      if$
+      s "Mathematical Finance" =
+        { "Math. Financ." 'jname := }
+        'skip$
+      if$
+      s "Monthly Labor Review" =
+        { "Mon. Labor Rev." 'jname := }
+        'skip$
+      if$
+      s "National Tax Journal" =
+        { "Natl. Tax. J." 'jname := }
+        'skip$
+      if$
+      s "New England Economic Review" =
+        { "New Engl. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "New Political Economy" =
+        { "New Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Open Economies Review" =
+        { "Open. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "Organizational Dynamics" =
+        { "Organ. Dyn." 'jname := }
+        'skip$
+      if$
+      s "Oxford Bulletin of Economics and Statistics" =
+        { "Oxford. B. Econ. Stat." 'jname := }
+        'skip$
+      if$
+      s "Oxford Economic Papers" =
+        { "Oxford Econ. Pap." 'jname := }
+        'skip$
+      if$
+      s "Oxford Review of Economic Policy" =
+        { "Oxford. Rev. Econ. Pol." 'jname := }
+        'skip$
+      if$
+      s "Politicka Ekonomie" =
+        { "Polit. Ekon." 'jname := }
+        'skip$
+      if$
+      s "Population and Development Review" =
+        { "Popul. Dev. Rev." 'jname := }
+        'skip$
+      if$
+      s "Post-Communist Economies" =
+        { "Post.-Communist. Econ." 'jname := }
+        'skip$
+      if$
+      s "Post-Soviet Affairs" =
+        { "Post.-Sov. Aff." 'jname := }
+        'skip$
+      if$
+      s "Psychology \& Marketing" =
+        { "Psychol. Market." 'jname := }
+        'skip$
+      if$
+      s "Public Choice" =
+        { "Public. Choice." 'jname := }
+        'skip$
+      if$
+      s "Quantitative Finance" =
+        { "Quant. Financ." 'jname := }
+        'skip$
+      if$
+      s "Quarterly Journal of Economics" =
+        { "Q. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "R\&D Management" =
+        { "R.\&D. Manage." 'jname := }
+        'skip$
+      if$
+      s "RAND Journal of Economics" =
+        { "Rand. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Real Estate Economics" =
+        { "Real Estate Econ." 'jname := }
+        'skip$
+      if$
+      s "Regional Science and Urban Economics" =
+        { "Reg. Sci. Urban. Econ." 'jname := }
+        'skip$
+      if$
+      s "Regional Studies" =
+        { "Reg. Stud." 'jname := }
+        'skip$
+      if$
+      s "Relations Industrielles-Industrial Relations" =
+        { "Relat. Ind.-Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "Research-Technology Management" =
+        { "Res. Technol. Manage." 'jname := }
+        'skip$
+      if$
+      s "Resource and Energy Economics" =
+        { "Resour. Energy. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of Accounting Studies" =
+        { "Rev. Acc. Stud." 'jname := }
+        'skip$
+      if$
+      s "Review of Agricultural Economics" =
+        { "Rev. Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of Development Economics" =
+        { "Rev. Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of Economic Dynamics" =
+        { "Rev. Econ. Dynam." 'jname := }
+        'skip$
+      if$
+      s "Review of Economic Studies" =
+        { "Rev. Econ. Stat." 'jname := }
+        'skip$
+      if$
+      s "Review of Economics and Statistics" =
+        { "Rev. Econ. Stud." 'jname := }
+        'skip$
+      if$
+      s "Review of Financial Studies" =
+        { "Rev. Financ. Stud." 'jname := }
+        'skip$
+      if$
+      s "Review of Income and Wealth" =
+        { "Rev. Income Wealth" 'jname := }
+        'skip$
+      if$
+      s "Review of Industrial Organization" =
+        { "Rev. Ind. Organ." 'jname := }
+        'skip$
+      if$
+      s "Review of International Economics" =
+        { "Rev. Int. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of International Political Economy" =
+        { "Rev. Int. Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of World Economics" =
+        { "Rev. World Econ." 'jname := }
+        'skip$
+      if$
+      s "Scandinavian Journal of Economics" =
+        { "Scand. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Scottish Journal of Political Economy" =
+        { "Scot. J. Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Small Business Economics" =
+        { "Small. Bus. Econ." 'jname := }
+        'skip$
+      if$
+      s "Social Choice and Welfare" =
+        { "Soc. Choice Welfare" 'jname := }
+        'skip$
+      if$
+      s "South African Journal of Economics" =
+        { "S. Afr. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Southern Economic Journal" =
+        { "South. Econ. J." 'jname := }
+        'skip$
+      if$
+      s "Strategic Management Journal" =
+        { "Statistics." 'jname := }
+        'skip$
+      if$
+      s "Strategic Management Journal" =
+        { "Strategic Manage. J." 'jname := }
+        'skip$
+      if$
+      s "Studies in Nonlinear Dynamics and Econometrics" =
+        { "Stoch. Anal. Appl." 'jname := }
+        'skip$
+      if$
+      s "Studies in Nonlinear Dynamics and Econometrics" =
+        { "Stud. Nonlinear. Dyn. E." 'jname := }
+        'skip$
+      if$
+      s "Supply Chain Management" =
+        { "Supply. Chain. Manag." 'jname := }
+        'skip$
+      if$
+      s "Sustainability" =
+        { "Sustainability" 'jname := }
+        'skip$
+      if$
+      s "Technological Forecasting and Social Change" =
+        { "Technol. Forecast. Soc." 'jname := }
+        'skip$
+      if$
+      s "Theory and Decision" =
+        { "Theor. Decis." 'jname := }
+        'skip$
+      if$
+      s "Tijdschrift voor Economische en Sociale Geografie" =
+        { "Tijdschr. Econ. Soc. Ge." 'jname := }
+        'skip$
+      if$
+      s "Trimestre Economico" =
+        { "Trimest. Econ." 'jname := }
+        'skip$
+      if$
+      s "Work and Occupations" =
+        { "Work Occupation." 'jname := }
+        'skip$
+      if$
+      s "Work, Employment and Society" =
+        { "Work Employ. Soc." 'jname := }
+        'skip$
+      if$
+      s "World Bank Economic Review" =
+        { "World Bank Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "World Bank Research Observer" =
+        { "World Bank Res. Obser." 'jname := }
+        'skip$
+      if$
+      s "World Development" =
+        { "World Dev." 'jname := }
+        'skip$
+      if$
+      s "World Economy" =
+        { "World Econ." 'jname := }
+        'skip$
+      if$
+    }
+  if$
+  jname
+}
+
+%%% journal
+FUNCTION {format.journal}
+{ journal empty$
+    { "" }
+    { bst.journal.pre format.journal.name.abb * bst.journal.post * }
+  if$
+}
+
+%%% title for book
+FUNCTION {format.book}
+{ title empty$
+    { "" }
+    { bst.book.pre title * bst.book.post * }
+  if$
+}
+
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+    { type$ "online" = bst.show.url or
+        { bst.url.pre url * bst.url.post *
+          access empty$
+             { "" * }
+             { bst.access.pre * access * bst.access.post * }
+          if$
+        }
+        { "" }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.doi}
+{ doi empty$ bst.show.doi not or
+    { "" }
+    { bst.doi.pre doi * bst.doi.post * }
+  if$
+}
+
+FUNCTION {format.url.doi}
+{ url empty$
+    { format.doi }
+    { doi empty$
+        { format.url }
+        { bst.url.doi #0 =
+            { format.url output.nocomma
+              format.doi }
+            { bst.url.doi #1 =
+                { format.url } 
+                { format.doi }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% and others
+FUNCTION {bst.and.others.output}
+{ nameorder.temp "random" =
+  bst.use.nameorder #0 = not and
+    { bst.and.others.nameorder }
+    { bst.and.others }
+  if$
+}
+
+%%% author and editor
+
+%%% name
+FUNCTION {format.names}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+
+  { nameptr #1 =
+      % First author
+      { bst.author.name #0 =
+        bst.author.name #1 =
+        or
+           { bst.first.name.initial #0 = 
+            { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+            { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+           if$
+         }
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+           if$
+         }
+        if$
+      }
+      % The second or later authors
+      { bst.author.name #0 =
+        bst.author.name #2 =
+        or
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+             if$
+           }
+           { bst.first.name.initial #0 = 
+                { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+                { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+             if$
+           }
+        if$
+      }
+    if$
+    
+    nameptr #1 >
+      % The second or later authors
+      { numnames bst.max.author.num >
+          { bst.and.others * 
+            #1 'namesleft :=  }
+          { nameorder.temp "random" =
+            bst.use.nameorder #0 = not and
+              { bst.and.nameorder * t * }
+              { namesleft #1 >
+                  % More than one authors left
+                  { ", " * t * }
+                  % Only one author left
+                  { t "others" =
+                      { bst.and.others.output * }
+                      { numnames #2 =
+                          % Entry with two authors
+                          { bst.and * t * }
+                          { bst.ands * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% remove successive periods (commas) from author
+FUNCTION {remove.ss.period.auth}
+{ 's :=
+  s format.names 'tempa :=
+  bst.author.post 'tempb :=
+  tempb #1 #1 substring$ "}" =
+    { tempa tempb * }
+    { tempa #-1 #1 substring$ tempb #1 #1 substring$ = 
+        { tempa tempb #2 global.max$ substring$ * }
+        { tempa tempb * }
+      if$
+    }
+  if$
+}
+
+% <prev name list> <new name list> compare.names <modified name list>
+FUNCTION {compare.names.aer}
+{ 's :=
+  'tempa :=
+
+%   "current.author = " s * "\\" * write$ newline$
+%   "prev.author = " tempa * "\\" * write$ newline$
+
+  tempa num.names$ 'len1.aer :=  % len1 = the number of previous authors
+  s num.names$ 'len2.aer :=         % len2 = the number of current authors
+
+% len1.aer := min(len1.aer,len2.aer)
+% len1 -> min{ the number of previous authors, the number of current authors }
+  len1.aer len2.aer >
+    { len2.aer 'len1.aer := }
+    { }
+  if$
+
+% start with an empty string, then while the components are the same
+% add "\bysame"
+  ""
+  #1 'i.aer :=
+
+  { i.aer len1.aer > not }
+    { tempa i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      =
+        { #1 i.aer <
+            { " and " * }       % \bysame で省略する著者の前につく and 
+            { }
+          if$
+          "\bysame{}" *
+          i.aer #1 + 'i.aer := } 
+        { #-1 'len1.aer := }
+      if$
+    }
+  while$
+
+% add the rest of the second string
+  { i.aer len2.aer > not }
+    { #1 i.aer <
+        { " and " * }
+        { }
+      if$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$ *
+      i.aer #1 + 'i.aer :=
+    }
+  while$
+}
+
+%%% author
+FUNCTION {format.authors}
+{ author empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer author compare.names.aer 's :=
+          author 'prev.author.aer := }
+        { author 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors}
+{ editor empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer editor compare.names.aer 's :=
+          editor 'prev.author.aer := }
+        { editor 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+      s num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.authors.alt}
+{ author empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        {"\bysame "}
+        { bst.author.pre author remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors.alt}
+{ editor empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre editor remove.ss.period.auth * }
+      if$
+      editor num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+%%% format.in.ed.booktitle
+FUNCTION {format.editors.x}
+{ editor empty$
+    { "" }
+    { bst.editor.btitle.order #0 =
+        { "" }
+        { editor num.names$ #1 >
+           { bst.editors " by " * }
+           { bst.editor  " by " * }
+          if$
+        }
+      if$
+      editor format.names *
+      bst.editor.btitle.order #0 =
+        { editor num.names$ #1 >
+           { bst.editors * }
+           { bst.editor * }
+          if$
+        }
+        { "" * }
+      if$
+    }
+  if$
+}
+
+%%% Remove commas in the cases like "?." and "?,".
+FUNCTION {remove.irrelevant.period.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #-1 #3 substring$ "?,'" =
+      s #-1 #3 substring$ "?.'" = or
+        { s #-3 global.max$ substring$ "'" * }
+        { s #-1 #4 substring$ "?,''" =
+          s #-1 #4 substring$ "?.''" = or
+            { s #-4 global.max$ substring$ "''" * }
+            { s #-1 #2 substring$ "?," =
+              s #-1 #2 substring$ "?." = or
+                { s #-2 global.max$ substring$ "" * }
+                { s #-1 #3 substring$ "?,~" =
+                  s #-1 #3 substring$ "?.~" = or
+                    { s #-4 global.max$ substring$ "?~" * }
+                    's
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% title
+FUNCTION {format.title.sub}
+{ bst.title.lower.case #0 =
+     { bst.title.pre title * bst.title.post * }
+     { bst.title.pre title "t" change.case$ * bst.title.post * }
+  if$
+}
+
+%%% title
+FUNCTION {format.title}
+{ title empty$
+  bst.hide.title #0 = not or
+    { "" }
+    { format.title.sub remove.irrelevant.period.comma }
+  if$
+}
+
+%%% title for misc.
+FUNCTION {format.misc.title}
+{ title empty$
+    { "" }
+    { bst.title.pre title * bst.title.post * }
+  if$
+}
+
+% Convert "-" to "--" (for pages field)
+FUNCTION {n.dashify}
+{ 't :=
+  ""
+  %% while$
+  { t empty$ not }
+  { t #1 #1 substring$ "-" =
+      { t #1 #2 substring$ "--" = not
+          { "--" *
+            t #2 global.max$ substring$ 't :=
+          }
+          { { t #1 #1 substring$ "-" = }
+            { "-" *
+              t #2 global.max$ substring$ 't :=
+            }
+            while$
+          }
+        if$
+      }
+      { t #1 #1 substring$ *
+       t #2 global.max$ substring$ 't :=
+      }
+    if$
+  }
+  while$
+}
+
+%%% year
+FUNCTION {format.year}
+{ year empty$
+    { "there's no year in " cite$ * warning$
+      ", " }
+    { type$ "article" =
+        { bst.year.pre year * extra.label * bst.year.post * }
+        { bst.year.na.pre year * extra.label * bst.year.na.post * }
+      if$
+    }
+  if$
+}
+
+%%% page for book
+FUNCTION {format.book.pages}
+{ pages empty$
+    { "" }
+    { bst.pages.pre pages * bst.pages.post * }
+  if$
+}
+
+%%% Attach tie for the string with two or less characters.
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+    { "~" }
+    { " " }
+  if$
+  swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+
+%%% volume for book
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+    { bst.volume.pre volume * bst.volume.post *
+      series empty$
+        'skip$
+        %% If there is series field
+        { " of " * series * bst.series.post * }
+      if$
+%       "volume and number" number either.or.check
+    }
+  if$
+}
+
+%%% series
+FUNCTION {output.series}
+{ series empty$
+    { "" }
+    { bst.series.pre series * bst.series.post * }
+ if$
+}
+
+%%% number and series
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+      bst.hide.month #0 = not or
+        % number is empty
+        { series empty$
+            { "" }
+            % series is not empty.
+            { output.series }
+          if$
+        }
+        % number is not empty$
+        { series empty$
+            { bst.number.pre number * bst.number.post * }
+            % series is not empty.
+            { bst.in bst.series.pre * series * bst.series.post *
+              bst.number.pre * number * bst.number.post * }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+%%% Number or not.
+FUNCTION {is.num}
+{ chr.to.int$
+  duplicate$ "0" chr.to.int$ < not
+  swap$ "9" chr.to.int$ > not and
+}
+
+FUNCTION {extract.num}
+{ duplicate$ 't :=
+  "" 's :=
+  { t empty$ not }
+  { t #1 #1 substring$
+    t #2 global.max$ substring$ 't :=
+    duplicate$ is.num
+      { s swap$ * 's := }
+      { pop$ "" 't := }
+    if$
+  }
+  while$
+  s empty$
+    'skip$
+    { pop$ s }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%      edition
+
+% Convert edition to 1st, 2nd, 3rd, 4th etc
+FUNCTION {eng.ord}
+{ duplicate$ "1" swap$ *
+  #-2 #1 substring$ "1" =
+     { bst.th * }
+     { duplicate$ #-1 #1 substring$
+       duplicate$ "1" =
+         { pop$ bst.st * }
+         { duplicate$ "2" =
+             { pop$ bst.nd * }
+             { "3" =
+                 { bst.rd * }
+                 { bst.th * }
+               if$
+             }
+           if$
+          }
+       if$
+     }
+   if$
+}
+
+% Convert first, second etc in edition field to 1st, 2nd (from jfm.bst)
+FUNCTION {convert.edition}
+{ edition extract.num "l" change.case$ 's :=
+  s "first" = s "1" = or
+    { bst.first }
+    { s "second" = s "2" = or
+        { bst.second }
+        { s "third" = s "3" = or
+            { bst.third }
+            { s "fourth" = s "4" = or
+                { bst.fourth }
+                { s "fifth" = s "5" = or
+                    { bst.fifth }
+                    { s #1 #1 substring$ is.num
+                        { s eng.ord }
+                        { edition }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% edition
+FUNCTION {format.edition}
+{ edition empty$
+    { "" }
+    { output.state mid.sentence =
+        { bst.edition.pre convert.edition "l" change.case$ * bst.edition.post * }
+        { bst.edition.pre convert.edition "t" change.case$ * bst.edition.post * }
+      if$
+    }
+  if$
+}
+
+%%% month
+FUNCTION {format.month}
+{ month empty$
+  bst.hide.month #0 = not or
+    { "" }
+    { bst.month.pre month * bst.month.post * }
+  if$
+}
+
+%%% year and month
+FUNCTION {format.date}
+{ format.month format.year *
+}
+
+%%% Is multiple pages like 1-100?
+FUNCTION { multi.page.check }
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+
+%%% pages
+FUNCTION {format.pages}
+{ pages empty$
+    { "" }
+    { pages multi.page.check
+      { bst.pages.pre pages n.dashify tie.or.space.connect * bst.pages.post }
+      { bst.page.pre pages tie.or.space.connect * bst.page.post }
+     if$
+    }
+ if$
+}
+
+%%% number
+FUNCTION {format.number}
+{ number empty$
+  bst.hide.number #0 = not or
+    { "" }
+    { bst.number.pre number * bst.number.post * }
+  if$
+}
+
+%%% volume
+FUNCTION {format.volume}
+{ volume empty$
+    'skip$
+    { bst.volume.pre volume * bst.volume.post *
+      bst.year.position #3 =
+        { format.year * }
+        'skip$
+      if$
+    }
+  if$
+}
+
+%%% number, page
+FUNCTION {format.number.pages}
+{ number empty$
+    { format.pages }
+    { format.number format.pages * }
+  if$
+}
+
+%%% volume, page
+FUNCTION {format.volume.pages}
+{ volume empty$
+    { format.pages }
+    { format.volume format.pages * }
+  if$
+}
+
+%%% volume, number, page
+FUNCTION {format.volume.number.pages}
+{ volume empty$
+    { number empty$
+        { format.pages }
+        { format.number format.pages * }
+      if$
+    }
+    { number empty$
+        { format.volume format.pages * }
+        { format.volume format.number * format.pages * }
+      if$
+    }
+  if$
+}
+
+% volume, number, page
+FUNCTION {format.vol.num.pages}
+{ volume empty$
+    %% volume is empty.
+    { number empty$
+        %% number is empty.
+        { pages empty$
+            % warning
+            { "there is no volume, number, and pages in " cite$ * warning$ "" } 
+            { "" format.pages * }
+         if$
+        }
+        %% number is not empty.
+        % warning
+        { "there's a number but no volume in " cite$ * warning$
+          format.number.pages }
+     if$
+    }
+    %% volume is not empty.
+    { number empty$
+        %% number is empty.
+        { format.volume.pages }
+        %% number is not empty.
+        { format.volume.number.pages }
+     if$
+    }
+  if$
+}
+
+%%% chapter
+FUNCTION {format.chapter}
+{ chapter empty$
+    { "" }
+    { type empty$
+        { bst.chapter.pre chapter tie.or.space.connect * bst.chapter.post }
+        { ", " * type " " * chapter * }
+      if$
+    }
+  if$
+}
+
+%%% chapter, pages
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    { pages empty$
+        { "" }
+        { "" format.pages * }
+      if$
+    }
+    { pages empty$
+        { "" format.chapter * }
+        { "" format.chapter * format.pages * }
+      if$
+    }
+  if$
+}
+
+%%% editor and booktitle
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+    { "" }
+    { editor empty$
+        { bst.in format.btitle * }
+        { bst.editor.btitle.order #0 =
+            { bst.in format.editors.x * " " * format.btitle * }
+            { bst.in format.btitle * " " * format.editors.x * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% howpublished
+FUNCTION {format.howpublished}
+{ howpublished empty$
+    { "" }
+    { bst.howpublished.pre howpublished * bst.howpublished.post * }
+  if$
+}
+
+%%% address
+FUNCTION {format.address}
+{ address empty$
+    { "" }
+    { bst.address.pre address * bst.address.post * }
+  if$
+}
+
+%%% publisher
+FUNCTION {format.publisher}
+{ publisher empty$
+    { "" }
+    { bst.publisher.pre publisher * bst.publisher.post * }
+  if$
+}
+
+%%% organization
+FUNCTION {format.organization}
+{ organization empty$
+    { "" }
+    { bst.organization.pre organization * bst.organization.post * }
+  if$
+}
+
+%% publisher and address
+FUNCTION {output.publisher.address}
+{ address empty$
+    { format.publisher "publisher" output.check.nocomma }
+    { bst.address.position #0 = 
+        { format.address output.nocomma
+          format.publisher "publisher" output.check.nocomma }
+        { format.publisher "publisher" output.check.nocomma
+          format.address output.nocomma }
+      if$
+    }
+  if$
+}
+
+%% address, organization, publisher
+FUNCTION {output.address.organization.publisher}
+{ address empty$
+    %% address is empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            'skip$
+            { format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            { format.organization "organization" output.check.nocomma }
+            { format.organization "organization" output.check.nocomma
+              format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+     if$
+    }
+    %% address is not empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            %% publisher is empty
+            { format.address output.nocomma }
+            %% publisher is not empty
+            { bst.address.position #0 =
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            %% publisher is empty
+            { format.organization "organization" output.check.nocomma
+              format.address output.nocomma }
+            %% publisher is not empty
+            { format.organization "organization" output.check.nocomma
+              bst.address.position #0 = 
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+     if$
+    }
+  if$
+}
+
+%%% misc
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+    'skip$
+    { pop$ " " type * }
+  if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+    { bst.techrep }
+    { " " type * }
+  if$
+  number empty$
+    { "t" change.case$ }
+    { number tie.or.space.connect }
+  if$
+}
+
+%%% phdthesis
+FUNCTION {format.phd}
+{ bst.phdthesis }
+
+%%% mastersthesis
+FUNCTION {format.mthesis}
+{ bst.mthesis }
+
+%%% school
+FUNCTION {format.school}
+{ school empty$
+    { "" }
+    { bst.school.pre school * bst.school.post * }
+  if$
+}
+
+%%% institution
+FUNCTION {format.institution}
+{ institution empty$
+    { "" }
+    { bst.institution.pre institution * bst.institution.post * }
+  if$
+}
+
+%%% remove first ? characters.
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+
+FUNCTION {format.note}
+{ note empty$
+    { "" }
+    { bst.note.pre note * bst.note.post * }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        \havarditem
+
+FUNCTION {output.bibitem}
+{ newline$
+  "\harvarditem[" write$
+  alabel write$                 % alabel <- abbreviated citation
+  "]{" write$
+  flabel write$                 % flabel <- full citation
+  "}{" write$
+  cyear write$
+  % cyear = year
+  "}{" write$
+  cite$ write$                  % cite$ -> pusch keyword
+  "}" write$
+  % If number index is on
+  bst.use.number.index #0 =
+     'skip$
+     { index #1 + 'index :=
+       "" 'preone :=
+       "" 'preten :=
+       bst.number.index.digit "1" =
+         'skip$
+         { bst.number.index.digit "2" =
+           { "\hskip0.5em" 'preone := }
+           { bst.number.index.digit "3" =
+              { "\hskip1em" 'preone :=
+                "\hskip0.5em" 'preten := }
+              'skip$
+             if$
+           }
+         if$
+         }
+       if$  
+     }
+  if$
+  newline$
+  before.all 'output.state :=
+  ""
+  % number index
+  bst.use.number.index #0 =
+     'skip$
+     { index #10 <
+         % Insert spaces according to digit of number index.
+         { preone }
+         { index #100 <
+             { preten }
+             { "" }
+           if$
+         }
+       if$
+       bst.number.index.pre * index int.to.str$ * bst.number.index.post * write$
+     }
+ if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        article
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.journal "journal" output.check.nocomma
+  bst.year.position #2 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+  format.vol.num.pages output.nocomma
+
+  bst.year.position #1 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        book
+
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check 
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  format.edition output.nocomma
+  format.book.pages output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        booklet
+
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output.nocomma
+  format.year output.nocomma
+  format.misc.title "title" output.check.nocomma
+  format.howpublished output.nocomma
+  format.address output.nocomma
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inbook
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+%   format.book remove.pre.comma "title" output.check.nocomma
+  format.book "title" output.check.nocomma
+  format.edition output.nocomma
+
+  format.bvolume output.nocomma
+  format.chapter.pages "chapter and pages" output.check.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       incollection
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.edition output.nocomma
+  format.chapter.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inproceedings
+
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  format.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       conference
+
+FUNCTION {conference}
+{ inproceedings }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       manual
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization empty$
+        'skip$
+        { organization output.nonnull.nocomma
+          address output.nocomma
+        }
+      if$
+    }
+    { format.authors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  author empty$
+    { organization empty$
+        { format.address new.block.check
+          format.address output.nocomma
+        }
+        'skip$
+      if$
+    }
+    { output.address.organization.publisher }
+  if$
+  format.edition output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       mastersthesis
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.mthesis format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       misc
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Online
+
+FUNCTION {online}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       phdthesis
+
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  format.phd
+  format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  address empty$
+    'skip$
+    { format.address output.nocomma }
+  if$
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       proceedings
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization output.nocomma }
+    { format.editors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.btitle remove.pre.comma "title" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       techreport
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.tr.number output.nonnull.nocomma
+  format.institution "institution" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       unpublished
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  bst.year.position #0 = not
+    { format.date remove.pre.comma output.nocomma }
+    { month empty$
+        'skip$
+        { format.month remove.pre.comma output.nocomma }
+      if$
+    }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note "note" output.check.nocomma
+  fin.entry
+}
+
+FUNCTION {default.type}
+{ misc }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Alias for month names:
+
+MACRO {jan} {"January"}
+MACRO {feb} {"February"}
+MACRO {mar} {"March"}
+MACRO {apr} {"April"}
+MACRO {may} {"May"}
+MACRO {jun} {"June"}
+MACRO {jul} {"July"}
+MACRO {aug} {"August"}
+MACRO {sep} {"September"}
+MACRO {oct} {"October"}
+MACRO {nov} {"November"}
+MACRO {dec} {"December"}
+
+%%% Read entries:
+READ
+
+%%% Variable for remembering the order of citation.
+INTEGERS { order.num }
+FUNCTION {initialize.order.num}
+{
+  #1 'order.num :=
+}
+%%% Initialize a variables
+EXECUTE {initialize.order.num}
+
+%%% Variable for remembering the order of citation.
+FUNCTION {set.order.cited}
+{
+  order.num 'order.cited :=
+  #1 order.num + 'order.num :=
+}
+%%% Iterate for all entries:
+ITERATE {set.order.cited}
+
+%%% check the value of nameorder field.
+FUNCTION {set.nameorder}
+{ nameorder empty$
+    { "" 'nameorder.temp := }
+    { nameorder 'nameorder.temp := }
+  if$
+}
+%%% Iterate for all entries:
+ITERATE {set.nameorder}
+
+%%% Remove symbols and convert to lowercase.
+FUNCTION {sortify}
+{ purify$ "l" change.case$ }
+
+%%% names for sorting
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { nameptr #1 >
+        { ", " * }
+        'skip$
+      if$
+      s nameptr "{ll}{ f}{ j}" format.name$ 't :=
+      nameptr numnames = t "others" = and
+        { bst.and.others.output *}
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.names.abb}
+{ 's :=
+  s num.names$ 'numnames :=
+  numnames bst.and.others.num <
+     { s sort.format.names }
+     { s #1 "{ll}{ f}{ j}" format.name$ " zz " * }
+  if$
+}
+
+%%% Label for full author name.
+FUNCTION {format.lab.names.full}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{vv~}{ll}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                  { bst.and.nameorder * t * }
+                  { ", " * t * }
+                if$
+              }
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 > 
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.ands * t * }
+                        if$
+                      }
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.and * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+  numnames #1 > #1 #2 = and {", eds" *} {} if$
+  numnames #1 = #1 #2 = and {", ed" *} {} if$
+}
+
+%%% laberl for abbreviated author name.
+FUNCTION {format.lab.names.abb}
+{ 's :=
+   s num.names$ 'numnames :=
+   numnames bst.and.others.num <
+     % if the number of authors is less than bst.and.others.num, full name.
+     { s format.lab.names.full }
+     % if the number of authors is equal or more than bst.and.others.num, abbreviated name.
+     { s #1 "{ll}" format.name$ bst.and.others.output * }
+   if$
+}
+
+%%% abbreviated author
+FUNCTION {author.key.label.abb}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.key.label.full}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {format.names.full.wo.and}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{ll}{, ff}{, jj}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { " " * t * }
+              { t "others" =
+                  { " " * }
+                  { numnames #2 > 
+                      { " " * t * }
+                      { " " * t * }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+}
+
+FUNCTION {author.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.editor.key.full.wo.and}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.names.full.wo.and }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {editor.key.organization.key.full.wo.and}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.key.organization.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+%%% abbreviated author
+FUNCTION {author.editor.key.label.abb}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.abb }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.editor.key.label.full}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.full }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.full}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.abb}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.full}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.full }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.abb}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.abb }
+  if$
+}
+
+%%% Convert numbers: 0->9, 1->8, 2->7,..., 9->0
+FUNCTION {reverse.num}
+{ 's :=
+  s "1" =
+    { "8" 'year.num := }
+    { s "2" =
+        { "7" 'year.num := }
+        { s "3" =
+            { "6" 'year.num := }
+            { s "4" =
+                { "5" 'year.num := }
+                { s "5" =
+                    { "4" 'year.num := }
+                    { s "6" =
+                        { "3" 'year.num := }
+                        { s "7" =
+                            { "2" 'year.num := }
+                            { s "8" =
+                                { "1" 'year.num := }
+                                { s "9" =
+                                    { "0" 'year.num := }
+                                    { s "0" =
+                                        { "9" 'year.num := }
+                                        { "9" 'year.num := }
+                                    if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+  year.num
+}
+
+%%% Convert year (large number -> small number)
+FUNCTION {convert.year}
+{ 't := 
+  bst.reverse.year #0 =
+    { t 'tt := }
+    { t #1 #1 substring$ reverse.num 
+      t #2 #1 substring$ reverse.num *
+      t #3 #1 substring$ reverse.num *
+      t #4 #1 substring$ reverse.num * 'tt := }
+  if$
+  tt
+}
+
+%%% cyear
+FUNCTION {calc.cyear}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.full.wo.and
+    { type$ "proceedings" =
+        'editor.key.organization.key.full.wo.and
+        { type$ "manual" =
+            'author.key.organization.key.full.wo.and
+            'author.key.full.wo.and
+          if$
+        }
+      if$
+    }
+  if$
+  duplicate$
+  year empty$
+    { "2199" 'cyear := }
+    { year 'cyear := }
+  if$
+  year empty$
+    { " " "2199" convert.year * field.or.null * }
+    { " " year convert.year * field.or.null * }
+  if$
+  sortify 'sort.label :=
+  % For debug
+  econ.debug #0 = not
+    { "sort.label = ``\texttt{" write$
+      sort.label write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+ pop$
+}
+
+FUNCTION {calc.sort.label.abb}
+{ author empty$
+    { editor empty$
+       { "" }
+       { editor 's := }
+      if$
+    }
+    { author 's := }
+  if$
+  s sort.format.names.abb 't :=
+  year empty$
+    { t sortify " " * "2199" convert.year * 'sort.label.abb := }
+    { t sortify " " * year convert.year * 'sort.label.abb := }
+  if$
+  econ.debug #0 = not
+    { "sort.label.abb = ``\texttt{" write$
+      sort.label.abb write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+  if$
+}
+
+%%% flabel
+FUNCTION {calc.flabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.full
+    { type$ "proceedings" =
+        'editor.key.organization.label.full
+        { type$ "manual" =
+            'author.key.organization.label.full
+            'author.key.label.full
+          if$
+        }
+      if$
+    }
+  if$
+  'flabel :=
+  author empty$
+    'skip$
+    { author num.names$ 'numnames :=
+      numnames bst.max.author.num >
+        { alabel 'flabel := }
+        'skip$
+      if$
+    }
+  if$
+  % For debug
+  econ.debug #0 = not
+    { "flabel = ``\texttt{" write$
+      flabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% alabel
+FUNCTION {calc.alabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.abb
+    { type$ "proceedings" =
+        'editor.key.organization.label.abb
+        { type$ "manual" =
+            'author.key.organization.label.abb
+            'author.key.label.abb
+          if$
+        }
+      if$
+    }
+  if$
+  'alabel :=
+  % For debug
+  econ.debug #0 = not
+    { "alabel = ``\texttt{" write$
+      alabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% title for sorting
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+
+%%% author for sorting
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+%%% editor for sorting
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+
+%%% 1,...,9 -> 001,...,009
+%%% 10,...,99 -> 010,...,099
+FUNCTION {add.zero.to.number}
+{ 's :=
+    s text.length$ #1 =
+      { "00" s * }
+      { s text.length$ #2 =
+          { "0" s * }
+          { s }
+        if$
+      }
+   if$
+}
+
+%% entry type
+FUNCTION {bst.sort.entry.type.order}
+{ 'item.type :=
+  item.type "article" =
+    { "01" }
+    { item.type "book" =
+        { "02" }
+        { item.type "booklet" =
+            { "03" }
+            { item.type "comment" =
+                { "04" }
+                { item.type "conference" =
+                    { "05" }
+                    { item.type "inbook" =
+                        { "06" }
+                        { item.type "incollection" =
+                            { "07" }
+                            { item.type "inproceedings" =
+                                { "08" }
+                                { item.type "manual" =
+                                    { "09" }
+                                    { item.type "masterthesis" =
+                                        { "10" }
+                                        { item.type "misc" =
+                                           { "11" }
+                                           { item.type "phdthesis" =
+                                              { "12" }
+                                              { item.type "proceedings" =
+                                                 { "13" }
+                                                 { item.type "techreport" =
+                                                    { "14" }
+                                                    { item.type "unpublished" =
+                                                       { "15" }
+                                                       { "16" }
+                                                      if$
+                                                    }
+                                                   if$
+                                                 }
+                                                if$
+                                              }
+                                             if$
+                                           }
+                                          if$
+                                        }
+                                      if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+}
+
+%%% Create sort.key$: absorder -> author -> year -> order -> month -> title.
+FUNCTION {presort.one}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " *
+  sort.label.abb *
+  " " *  
+  type$ "book" = type$ "inbook" = or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  * " " *
+  " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " * sort.label * " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% Codes for debugging
+FUNCTION {calc.alabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.alabel: alabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {calc.flabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.flabel: flabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {presort.one.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (1st time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (2nd time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.cyear.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.cyear: sort.label = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.sort.label.abb.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.sort.label.abb: sort.label.abb = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+%%% alabel
+EXECUTE {calc.alabel.mess}
+ITERATE {calc.alabel}
+
+%%% flabel
+EXECUTE {calc.flabel.mess}
+ITERATE {calc.flabel}
+
+%%% cyear and sort.label
+EXECUTE {calc.cyear.mess}
+ITERATE {calc.cyear}
+
+%%%
+EXECUTE {calc.sort.label.abb.mess}
+ITERATE {calc.sort.label.abb}
+
+%%% Sorting by $sort.key (first time)
+%
+% Sorting is done in two times. This is the first time.
+%
+EXECUTE {presort.one.mess}
+ITERATE {presort.one}
+SORT
+
+FUNCTION {forward.pass}
+{ bst.use.bysame #0 = bst.use.bysame #2 = or
+    % Not use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+    }
+    % Use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+      author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+      if$
+      'this.author :=
+      % format.names 'this.author :=
+      this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {reverse.pass}
+{ next.extra "b" =
+    { "a" 'extra.label := }
+    'skip$
+  if$
+  extra.label empty$ not
+    { cyear extra.label * }
+    { cyear "" * }
+  if$
+  "" field.or.null *
+  'cyear :=
+  extra.label 'next.extra :=
+}
+
+%%% \bysame
+ITERATE {forward.pass}
+
+REVERSE {reverse.pass}
+
+%%% Sorting by sort.key$ (second time)
+EXECUTE {presort.two.mess}
+ITERATE {presort.two}
+SORT
+
+FUNCTION {reset.prev.author}
+{ "xxyyzz" 'prev.author := }
+
+EXECUTE {reset.prev.author}
+
+FUNCTION {forward.pass.two}
+{ bst.use.bysame #1 = 
+    { author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+     if$
+     'this.author :=
+     this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+     if$
+    }
+   'skip$
+  if$
+}
+
+ITERATE {forward.pass.two}
+
+FUNCTION{punctuation}
+{
+  "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" write$ newline$
+  "%  This bbl file is created by " econ.file * " ver." * econ.version *          write$ newline$
+  "%  The latest " econ.file * " is available at " *			write$ newline$
+  "%  <https://github.com/ShiroTakeda/econ-bst>"                        write$ newline$ newline$
+}
+
+EXECUTE {punctuation}
+
+FUNCTION {begin.bib}
+{
+  preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  bst.use.bysame #0 =
+     % Not use \bysame.
+     'skip$
+     % Use \bysame.
+     { "%%% Definition of \bysame" write$ newline$
+       "\ifx\undefined\bysame" write$ newline$
+       "\newcommand{\bysame}{" bst.bysame.definition * "}" *
+       write$ newline$
+       "\fi" write$ newline$ newline$ }
+  if$
+  %% When number index is attached to the beginning of each item.
+  bst.use.number.index #0 =
+     'skip$
+     { bst.number.index.digit "1" =
+         % one digit.
+         { bst.number.index.bibhang.one }
+         { bst.number.index.digit "2" =
+            % two digits.
+            { bst.number.index.bibhang.ten }
+            % three or more digits.
+            { bst.number.index.bibhang.hund }
+           if$
+         }
+       if$
+       'hang :=
+       "%%% Redefinition of \bibhang" write$ newline$
+       "\ifx\undefined\bibhang" write$ newline$
+       "\relax" write$ newline$
+       "\else" write$ newline$
+       "\setlength{\bibhang}{"
+       hang * "}" * write$ newline$ 
+       "\fi" write$ newline$ newline$
+       }
+  if$
+  "\begin{thebibliography}{xxx}" write$ newline$
+
+  %% Initialize the variable `index'.
+  #0 'index :=
+}
+
+FUNCTION {end.bib}
+{ newline$ "\end{thebibliography}" write$ newline$ }
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+EXECUTE {end.bib}
+
+%  --------------------
+%  Local Variables:
+%  fill-column: 78
+%  mode: bst
+%  End:
diff --git a/Master/texmf-dist/bibtex/bst/econ-bst/econ-jie.bst b/Master/texmf-dist/bibtex/bst/econ-bst/econ-jie.bst
new file mode 100644
index 00000000000..06a2cfbe50b
--- /dev/null
+++ b/Master/texmf-dist/bibtex/bst/econ-bst/econ-jie.bst
@@ -0,0 +1,3594 @@
+%% econ.bst: BibTeX style file for papers in economics.
+%
+% Author: Shiro Takeda
+% Maintainer: Shiro Takeda
+% Copyright (C) 2001-2018 Shiro Takeda
+% First-written:       <2007/07/28>
+% Version: 2.7
+% Keywords: TeX, BibTeX, bst 
+% URL: https://github.com/ShiroTakeda/econ-bst
+
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% The Current Maintainer of this work is Shiro Takeda.
+
+%% econ-jie.bst
+
+% "econ-jie.bst" is a BibTeX style file for Journal of International Economics
+% "econ-jie.bst" is created from "econ.bst" which is distributed from
+% https://github.com/ShiroTakeda/econ-bst
+
+% Bug reports, requests and suggestions are welcome. 
+
+% For changelogs, see CHANGES.txt file.
+
+% version number
+FUNCTION {econ.version} { "2.7" }
+
+% File name
+FUNCTION {econ.file} { "econ-jie.bst" }
+
+% Debug mode. Non-zero makes debug mode on.
+FUNCTION {econ.debug}
+{ #0 }    % Debug mode off (default).
+% { #1 }    % Debug mode on.
+
+ENTRY
+  %%% Declaration of field
+  { access address author booktitle chapter doi edition editor howpublished
+    institution journal key month note number organization pages publisher
+    school series title type url volume year
+  % Fields specific to econ.bst
+    order absorder nameorder
+  }
+
+  % Definition of entry variable.  The entry variable is a variable which has
+  % different values according to different entries.
+  %% Integer entry variable:
+  { order.cited }
+
+  %% String entry variable
+  { label cyear flabel alabel extra.label sort.label sort.label.abb
+    extra.label.bysame nameorder.temp jname }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Use \bysame or not.
+%
+% If set to #0, \bysame is not used.
+% If set to #1, \bysame is used 
+% If set to #2, \bysame is used (alternative abbreviation style).
+%
+% Note that integer number is expressed as # + integer in bst file.
+% \bysame is the function that abbreviates succession of the same authors' name by ---.
+%
+% See econ-sample.pdf for details.
+% 
+FUNCTION {bst.use.bysame}
+% { #0 }    % Not use \bysame
+{ #1 }    % -> Use \bysame (default)
+% { #2 }    % -> Use \bysame of alternative style.
+
+% The definition of \bysame command.
+%
+FUNCTION {bst.bysame.definition}
+{ "\hskip.3em \leavevmode\rule[.5ex]{3em}{.3pt}\hskip0.5em" } % (default)
+% { "\leavevmode\hbox to\leftmargin{\hrulefill\,\,}" } % If you set #2 to bst.use.bysame, use this.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% The order of fist and last name.
+%
+FUNCTION {bst.author.name}
+% { #0 }    % (default)
+{ #1 }
+% { #2 }
+
+% Case of #0: First author -> last-first, other authors -> first-last. 
+% Fujita, Masahisa, Paul R. Krugman, and Anthony J. Venables. 
+
+% Case of #1: All authors -> last-first
+% Fujita, Masahisa, Krugman, Paul R., and Venables, Anthony J.
+
+% Case of #2: All authors -> first-last
+% Masahisa Fujita, Paul R. Krugman, and Anthony J. Venables.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Abbreviate first name of authors (editors):
+%
+FUNCTION {bst.first.name.initial}
+% { #0 }    % #0 -> full letters (default).
+{ #1 }    % Non-zero -> initial letter only.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Decapitalize of strings in title field.
+%
+FUNCTION {bst.title.lower.case}
+% { #0 }    % If #0, not decapitalize title (default).
+{ #1 }    % If non-#0, decapitalize title
+
+% Hide title filed.
+%
+FUNCTION {bst.hide.title}
+{ #0 }    % #0 -> Title field is displayed (default)
+% { #1 }    % Non-zer -> Title field is hidden 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide month.
+%
+FUNCTION {bst.hide.month}
+{ #0 }    % #0 -> show month field (default).
+% { #1 }    % non-#0 -> hide month field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Attach number index like plain.bst.
+%
+FUNCTION {bst.use.number.index}
+{ #0 }    % Not use number index (default).
+% { #1 }    % Non-#0 -> Use number index
+
+% The string before number index:
+%
+FUNCTION {bst.number.index.pre}
+{ "[" }    % (default)
+
+% The string after number index.  Adjustment is recommended.
+%
+FUNCTION {bst.number.index.post}
+{ "]\hskip1.0em " }    % (default)
+
+% Maximum digit of number index:
+% If the number of reference items >= 100, set 3 to this function.
+% If the number of reference items < 100, set 2 to this function.
+% If the number of reference items < 10, set 1 to this function.
+%
+FUNCTION {bst.number.index.digit}
+{ "2" }    % (default)
+% { "3" }
+
+% The functions below are used to adjust space and postion.  If you use fonts
+% other than computer modern fonts, you had better make adjustments.
+%
+% Setting for bst.number.index.digit = 1:
+FUNCTION {bst.number.index.bibhang.one}
+{ "2.05em" }    % (default)
+% Setting for bst.number.index.digit = 2:
+FUNCTION {bst.number.index.bibhang.ten}
+{ "2.55em" }    % (default)
+% Setting for bst.number.index.digit = 3:
+FUNCTION {bst.number.index.bibhang.hund}
+{ "3.05em" }    % (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Position of "year":
+%
+% You can choose the position of year by this function.
+%
+% If set to #0, year is placed right after "author".
+% If set to non-zero, year is placed at the end (before note field) except for
+% aritcle type entry. 
+%
+% In article type entry, the position of year changes according to the
+% following rule:
+% 
+% #1 -> year is placed at the end.
+% #2 -> year is placed after journal name in aritcle type entry.
+% #3 -> year is placed after volume in aritcle type entry.
+%
+FUNCTION {bst.year.position}
+{ #0 }    % (default).
+% { #1 }    % Last place before note.
+% { #2 }    % After journal name for aticle type entry.
+% { #3 }    % After volume for aticle type entry.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If 0, references are sorted by old documents -> recent documents.  If
+% non-zero, reverse order.
+FUNCTION {bst.reverse.year}
+{ #0 }    % Normal order (old -> recent) (default).
+% { #1 }    % inverse order (recent -> old)
+
+% If non-zero, sort references by using year field as the primary key
+% (chronological sorting).
+FUNCTION {bst.sort.year}
+{ #0 }    % Normal case: year is used as the sorting key next to author (default).
+% { #1 }    % year is used as the primary sorting key.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If non-zero, references are listed in citation order.
+%
+FUNCTION {bst.no.sort}
+{ #0 }    % (default)
+% { #1 }    % listed in citation order.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Non-zero -> sort references by entry type (article, book, incollection etc.)
+%
+FUNCTION {bst.sort.entry.type}
+{ #0 }    % #0 -> Normal (not sort references by entry type) (default).
+% { #1 }    % Non-zero -> sort references by entry type.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use absorder field to sort items.  Otherwise, ignore absorder field.
+%
+FUNCTION {bst.notuse.absorder.field}
+{ #0 }    % #0 -> Use absorder (default).
+% { #1 }    % Non-#0 -> Not use absorder.
+%
+% Order of priority to sort items
+% 
+% absorder -> author -> year -> order -> month -> title
+%
+% wehre absorder and order fields are specific to econ.bst.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use order field to sort items.  Otherwise, ignore order field.
+% Note: order field is specific to econ.bst.
+FUNCTION {bst.notuse.order.field}
+{ #0 }    % #0 -> Use order field (default).
+% { #1 }    % Non-#0 -> not use order field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%     and
+
+%%% String used to separate author names in references.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.and}
+{ ", " }
+% { " and " }    % (default)
+
+%%% String used to separate author names in references (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.ands}
+{ ", " }
+% { ", and " }    % (default)
+
+%%% String used to separate author names in citation part.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.cite.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in citation part (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.cite.ands}
+{ " and " }    % (default)
+
+%%% If you want to use random author order for some bibliography entries, set
+% non-zero to this function.
+% 
+FUNCTION {bst.use.nameorder}
+{ #1 }	% Use random order (default)
+% { #0 }	% Not use random order
+
+%%% String used to separate author names in references for the entry of random
+% author order.
+%
+FUNCTION {bst.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+%%% String used to separate author names in citation part for the entry of
+% random author order
+%
+FUNCTION {bst.cite.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Author names in the citation part are abbreviated by et al. if the number of
+% authors is greater or equal to bst.and.others.num.
+FUNCTION {bst.and.others.num}
+{ #3 }    % If the number of authors is greater or equal to three (default).
+
+% If the number of authors is greater or equal to bst.max.author.num, only
+% first author is listed and other authors' names are abbreviated as "et al.".
+FUNCTION {bst.max.author.num}
+{ #12 }    % If the number of authors is greater or equal to 12 (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Strings used when abbreviating multiple-authors in citation part.
+FUNCTION {bst.and.others}
+{ " et~al." }    % (default)
+
+% Strings used when abbreviating multiple-authors in citation part for entries
+% with random author order.
+FUNCTION {bst.and.others.nameorder}
+{ " \textcircled{r}~al." }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       author 
+
+% The string before author:
+%
+FUNCTION {bst.author.pre}
+{ "" }    % (default)
+
+% The string after author:
+%
+FUNCTION {bst.author.post}
+{ "," }
+% { "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       year
+
+% The string before year only for aritcle type entry.
+%
+FUNCTION {bst.year.pre}
+{ " " }
+% { " (" }    % (default)
+
+% The string after year only for aritcle type entry.
+%
+FUNCTION {bst.year.post}
+{ ". " }
+% { ") " }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.pre}
+{ " " }
+% { " (" }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.post}
+{ ". " }
+% { ") " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       title (except for title in book)
+
+% The string before title:
+%
+FUNCTION {bst.title.pre}
+{ "" }
+% { "``" }    % (default)
+
+% The string after title:
+%
+FUNCTION {bst.title.post}
+{ "." }
+% { ",''" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       tile for book:
+
+% The string before book title:
+%
+FUNCTION {bst.book.pre}
+{ " " }
+% { " \textit{" }    % (default)
+
+% The string after book title:
+%
+FUNCTION {bst.book.post}
+{ "." }
+% { "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       booktitle
+
+% The string before booktitle:
+%
+FUNCTION {bst.btitle.pre}
+{ " " }
+% { " \textit{" }    % (default)
+
+% The string after booktitle:
+%
+FUNCTION {bst.btitle.post}
+{ "." }
+% { "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       journal name
+
+% The string before journal name:
+%
+FUNCTION {bst.journal.pre}
+{ " " }
+% { " \textit{" }    % (default)
+
+% The string after journal name:
+%
+FUNCTION {bst.journal.post}
+{ "." }
+% { "}" }    % (default)
+
+% Use the abbreviated journal name
+%
+% If set to #0, do not use abbreviated journal name.
+% If set to non-#0, use abbreviated journal name.
+%
+FUNCTION {bst.journal.name.abb}
+{ #0 }    % (default)
+% { #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       editor notation:
+
+% The string that indicates multiple editors:
+%
+FUNCTION {bst.editors}
+{ " (Eds.)," }
+% { " eds. " }    % (default)
+
+% The string that indicates single editor:
+%
+FUNCTION {bst.editor}
+{ " ed. " }    % (default)
+
+% Order of editor and booktitle in incollection and inproceedings entries.
+%
+% If set to #0: 	editors -> booktitle order
+% If set to non-zero:	booktitle -> editors order
+%
+FUNCTION {bst.editor.btitle.order}
+{ #0 }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       edition
+
+% The string before edition:
+%
+FUNCTION {bst.edition.pre}
+{ ", " }    % (default)
+
+% The string after edition:
+%
+FUNCTION {bst.edition.post}
+{ " edition" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       volume
+
+% The string before volume:
+%
+FUNCTION {bst.volume.pre}
+{ " " }
+% { ", " }    % (default)
+
+% The string after volume:
+%
+FUNCTION {bst.volume.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       number
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide number.  If non-zero, number is suppressed. 
+FUNCTION {bst.hide.number}
+{ #0 }    % #0 -> show number field (default)
+% { #1 }    % non-#0 -> Hide number field.
+
+% The string before number:
+%
+FUNCTION {bst.number.pre}
+{ " (" }    % (default)
+
+% The string after number:
+%
+FUNCTION {bst.number.post}
+{ ")," }
+% { ")" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       in 
+
+% In
+%
+FUNCTION {bst.in}
+{ " In: " }
+% { " in " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       page
+
+% The string before page (multiple pages):
+%
+FUNCTION {bst.pages.pre}
+{ " " }
+% { ", " }    % (default)
+
+% The string before page:
+%
+FUNCTION {bst.page.pre}
+{ ", " }    % (default)
+
+% The string after page (multiple pages):
+%
+FUNCTION {bst.pages.post}
+{ "" }    % (default)
+
+% The string after page:
+%
+FUNCTION {bst.page.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       chapter
+
+% The string before chapter:
+%
+FUNCTION {bst.chapter.pre}
+{ ", Chap." }    % (default)
+
+% The string after chapter:
+%
+FUNCTION {bst.chapter.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       month
+
+% The string before month:
+%
+FUNCTION {bst.month.pre}
+{ ", " }    % (default)
+
+% The string after month:
+%
+FUNCTION {bst.month.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       address
+% The string before address:
+%
+FUNCTION {bst.address.pre}
+{ ", " }    % (default)
+
+% The string after address:
+%
+FUNCTION {bst.address.post}
+{ "" }    % (default)
+
+% You can choose the order of address and publisher by this function.
+%
+% If #0,	address -> publisher order (the default value).
+% If non-zero,	publisher -> address order.
+
+FUNCTION {bst.address.position}
+% { #0 }    % Address is placed before publisher (default)
+{ #1 }    % Address is placed after publisher 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       publisher
+
+% The string before publisher:
+%
+FUNCTION {bst.publisher.pre}
+{ ", " }
+% { ": " }    % (default)
+
+% The string after publisher:
+%
+FUNCTION {bst.publisher.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       series
+
+% The string before series:
+%
+FUNCTION {bst.series.pre}
+{ ", " }    % (default)
+
+% The string after series:
+%
+FUNCTION {bst.series.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       organization
+
+% The string before organization:
+%
+FUNCTION {bst.organization.pre}
+{ ", " }    % (default)
+
+% The string after organization:
+%
+FUNCTION {bst.organization.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       school
+
+% The string before school:
+%
+FUNCTION {bst.school.pre}
+{ ", " }    % (default)
+
+% The string after school:
+%
+FUNCTION {bst.school.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       institution
+
+% The string before institution:
+%
+FUNCTION {bst.institution.pre}
+{ ", " }    % (default)
+
+% The string after institution:
+%
+FUNCTION {bst.institution.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       howpublished
+
+% The string before howpublished:
+%
+FUNCTION {bst.howpublished.pre}
+{ " " }    % (default)
+
+% The string after howpublished:
+%
+FUNCTION {bst.howpublished.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       url
+
+% Show or Hide url.  If non-zero, url is displayed. Otherwise, url is suppressed. 
+FUNCTION {bst.show.url}
+{ #1 }    % non-#0 -> Show url field (default)
+% { #0 }    % #0 -> Not show url field.
+
+% The string before url:
+%
+FUNCTION {bst.url.pre}
+{ ", \url{" }	% (default)
+
+% The string after url:
+%
+FUNCTION {bst.url.post}
+{ "}" }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Access
+
+% This setting is valid only if there are "access" field in bib
+% files. The value of access field indicates accessed date for URL.
+
+% The string before access.
+FUNCTION {bst.access.pre}
+{ ", accessed on " } % (default)
+
+% The string after access.
+FUNCTION {bst.access.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       DOI (digital object identifier)
+
+% This setting is valid only if there are "doi" field in bib files.
+
+% Show or Hide DOI.  If non-zero, DOI is displayed. Otherwise, DOI is suppressed. 
+FUNCTION {bst.show.doi}
+{ #1 }    % non-#0 -> Show DOI field (default)
+% { #0 }    % #0 -> Not show DOI field.
+
+% The string before DOI:
+%
+FUNCTION {bst.doi.pre}
+{ ", \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * } % (default)
+
+% The string after DOI:
+%
+FUNCTION {bst.doi.post}
+{ "}}" }	   % (default)
+
+% How to show URL and DOI fields when both fields exist.
+%
+% #0 -> Both fields are displayed
+% #1 -> Only URL field is displayed
+% #2 -> Only DOI field is displayed
+%
+FUNCTION {bst.url.doi}
+% { #0 }    % (default) -> Both fields are displayed
+% { #1 }    % -> Only URL field is displayed
+{ #2 }    % (default) --> Only DOI field is displayed 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Other functions:
+
+% The string before note.
+FUNCTION {bst.note.pre}
+{ ", " }    % (default)
+
+% The string after note.
+FUNCTION {bst.note.post}
+{ "" }    % (default)
+
+% The string that represents Technical report:
+%
+FUNCTION {bst.techrep}
+{ "Technical Report" }    % (default)
+
+% The string that represents master thesis:
+%
+FUNCTION {bst.mthesis}
+{ " Master's thesis" }    % (default)
+
+% The string that represents phd thesis:
+%
+FUNCTION {bst.phdthesis}
+{ " Ph.D. dissertation" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization end here:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FUNCTION {bst.first}
+{ "1st" }
+
+FUNCTION {bst.second}
+{ "2nd" }
+
+FUNCTION {bst.third}
+{ "3rd" }
+
+FUNCTION {bst.fourth}
+{ "4th" }
+
+FUNCTION {bst.fifth}
+{ "5th" }
+
+FUNCTION {bst.st}
+{ "st" }
+
+FUNCTION {bst.nd}
+{ "nd" }
+
+FUNCTION {bst.rd}
+{ "rd" }
+
+FUNCTION {bst.th}
+{ "th" }
+
+%%%%% memo by Takeda
+
+% "a" 'b := indicates substituting string "a" for variable b.
+
+% Integer number #0, #1,...
+
+%%% Function definition:
+%
+% FUNCTION {name}
+% { 's :=
+%
+% }
+%
+% This is the definition of a function named "name".   The function "name" is
+% used in the following way 
+%
+% "foo" name
+% "foo" is an argument for the function "name".
+%
+% About the definition of a function with more than two arguments, see the
+% definition of "chop.word".
+
+%%% Declaration of variables:
+
+%% String global variables:
+STRINGS { s t tt }
+STRINGS { year.num }
+STRINGS { preone preten }
+STRINGS { last.sort.label next.extra prev.author prev.author.aer this.author }
+STRINGS { hang }
+STRINGS { item.type }
+STRINGS { tempa tempb }
+
+%% Integer global variables:
+INTEGERS { nameptr namesleft numnames name.num }
+INTEGERS { multiresult }
+INTEGERS { index }
+INTEGERS { len }
+INTEGERS { last.extra.num }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+INTEGERS { last.period.comma }
+INTEGERS { len1.aer len2.aer i.aer }
+
+%%% Definition of functions:
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+
+%%% Initialize variables:
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+
+%%% Remove comma and add period:
+%
+%%%
+FUNCTION {add.period.x}
+{ duplicate$
+  #-1 #1 substring$ "," =
+    { #-2 global.max$ substring$ "." * }
+    { duplicate$
+      #-1 #2 substring$ ". " =
+        { #-3 global.max$ substring$ "." * }
+        { duplicate$
+          #-1 #2 substring$ ", " =
+            { #-3 global.max$ substring$ "." * }
+            { duplicate$
+              #-1 #2 substring$ ",'" =
+                { #-3 global.max$ substring$ ".'" * }
+                { duplicate$
+                  #-1 #2 substring$ ".'" =
+                    { #-3 global.max$ substring$ ".'" * }
+                    { duplicate$
+                      #-1 #2 substring$ ".~" =
+                        { #-3 global.max$ substring$ ".~" * }
+                        { duplicate$
+                          #-1 #2 substring$ ",~" =
+                            { #-3 global.max$ substring$ ".~" * }
+                            { duplicate$
+                              #-1 #3 substring$ ",''" =
+                                { #-4 global.max$ substring$ ".''" * }
+                                { duplicate$
+                                  #-1 #3 substring$ ".''" =
+                                    { #-4 global.max$ substring$ ".''" * }
+                                    { add.period$ }
+                                  if$
+                                }
+                              if$
+                            }
+                          if$
+                        }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {output.nonnull}
+{ 's :=
+  % mid.sentence
+  output.state mid.sentence =
+    { ", " * write$ }
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period.x " " * write$ }
+          if$
+        }
+      if$
+      % not mid.sentence, set to mid.sentence
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+
+%%% If the last character is period or comma, set non-zero to
+%%% last.period.comma.
+FUNCTION {period.comma.p}
+{ duplicate$ 't :=
+  t #-1 #1 substring$ "." = 
+  t #-1 #1 substring$ "," = or
+  t #-1 #1 substring$ ":" = or 
+  t #-1 #2 substring$ ".'" = or
+  t #-1 #2 substring$ ",'" = or
+  t #-1 #3 substring$ ".''" = or
+  t #-1 #3 substring$ ",''" = or
+  t #-1 #2 substring$ ".~" = or
+  t #-1 #2 substring$ ",~" = or
+    { #1 'last.period.comma := }
+    { #0 'last.period.comma := }
+  if$
+}
+
+%%% remove unnecessary comma.
+FUNCTION {remove.pre.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #1 #1 substring$ "," = 
+       { s #2 global.max$ substring$ }
+       { s #1 #1 substring$ "." = 
+          { s #2 global.max$ substring$ }
+          's
+         if$
+       }
+      if$
+    }
+  if$
+}
+
+%%% output.nonnull.nocomma is the same as output.nonnull except that it does
+%%% not add commas even in mid.sentence.
+FUNCTION {output.nonnull.nocomma}
+{ 's :=
+  output.state mid.sentence =
+    % mid.sentence
+    { period.comma.p "" * write$ }
+
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  last.period.comma #0 =
+    { s }
+    { s remove.pre.comma }
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output}
+% { duplicate$ empty$
+%     'pop$
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.nocomma}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull.nocomma
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output.check}
+% { 't :=
+%   duplicate$ empty$
+%     { pop$ "empty " t * " in " * cite$ * warning$ }
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.check.nocomma}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull.nocomma
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Format in bbl file:
+
+% \harvarditem[Brezis et~al.]{Brezis, Krugman and
+%   Tsiddon}{1993}{brezis93:_leapf_inter_compet}
+% Brezis, Elise~S., Paul~R. Krugman, and Daniel Tsiddon  (1993) ``Leapfrogging in
+%   International Competition: A Theory of Cycles in National Technological
+%   Leadership.'', {\em American Economic Review.}, Vol.~83. No.~5. pp.
+%   1211--1219.
+
+% \harvarditem[abbreviated citation]{full citation}{year}{keyword} ...
+
+%%% Add period and newline.
+FUNCTION {fin.entry}
+{ add.period.x
+  write$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+
+FUNCTION {new.block.check}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+
+%%% booktitle
+FUNCTION {format.btitle}
+{ booktitle empty$
+    { "" }
+    { bst.btitle.pre booktitle * bst.btitle.post * }
+  if$
+}
+
+FUNCTION {journal.name.sub}
+{ 't :=
+  t #1 #4 substring$ "The " =
+    % Use #30 to handle with the long journal name.
+    { t #5 #30 substring$ 't := }
+    'skip$
+  if$
+  t
+}
+
+FUNCTION {format.journal.name.abb}
+{ journal 's :=
+  journal 'jname :=
+  s journal.name.sub 's :=
+  bst.journal.name.abb #0 =
+    'skip$
+    { 
+       s "Academic Management Review" =
+        { "Acad. Manage. J." 'jname := }
+        'skip$
+      if$
+    }
+  if$
+  jname
+}
+
+%%% journal
+FUNCTION {format.journal}
+{ journal empty$
+    { "" }
+    { bst.journal.pre format.journal.name.abb * bst.journal.post * }
+  if$
+}
+
+%%% title for book
+FUNCTION {format.book}
+{ title empty$
+    { "" }
+    { bst.book.pre title * bst.book.post * }
+  if$
+}
+
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+    { type$ "online" = bst.show.url or
+        { bst.url.pre url * bst.url.post *
+          access empty$
+             { "" * }
+             { bst.access.pre * access * bst.access.post * }
+          if$
+        }
+        { "" }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.doi}
+{ doi empty$ bst.show.doi not or
+    { "" }
+    { bst.doi.pre doi * bst.doi.post * }
+  if$
+}
+
+FUNCTION {format.url.doi}
+{ url empty$
+    { format.doi }
+    { doi empty$
+        { format.url }
+        { bst.url.doi #0 =
+            { format.url output.nocomma
+              format.doi }
+            { bst.url.doi #1 =
+                { format.url } 
+                { format.doi }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% and others
+FUNCTION {bst.and.others.output}
+{ nameorder.temp "random" =
+  bst.use.nameorder #0 = not and
+    { bst.and.others.nameorder }
+    { bst.and.others }
+  if$
+}
+
+%%% author and editor
+
+%%% name
+FUNCTION {format.names}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+
+  { nameptr #1 =
+      % First author
+      { bst.author.name #0 =
+        bst.author.name #1 =
+        or
+           { bst.first.name.initial #0 = 
+            { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+            { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+           if$
+         }
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+           if$
+         }
+        if$
+      }
+      % The second or later authors
+      { bst.author.name #0 =
+        bst.author.name #2 =
+        or
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+             if$
+           }
+           { bst.first.name.initial #0 = 
+                { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+                { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+             if$
+           }
+        if$
+      }
+    if$
+    
+    nameptr #1 >
+      % The second or later authors
+      { numnames bst.max.author.num >
+          { bst.and.others * 
+            #1 'namesleft :=  }
+          { nameorder.temp "random" =
+            bst.use.nameorder #0 = not and
+              { bst.and.nameorder * t * }
+              { namesleft #1 >
+                  % More than one authors left
+                  { ", " * t * }
+                  % Only one author left
+                  { t "others" =
+                      { bst.and.others.output * }
+                      { numnames #2 =
+                          % Entry with two authors
+                          { bst.and * t * }
+                          { bst.ands * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% remove successive periods (commas) from author
+FUNCTION {remove.ss.period.auth}
+{ 's :=
+  s format.names 'tempa :=
+  bst.author.post 'tempb :=
+  tempb #1 #1 substring$ "}" =
+    { tempa tempb * }
+    { tempa #-1 #1 substring$ tempb #1 #1 substring$ = 
+        { tempa tempb #2 global.max$ substring$ * }
+        { tempa tempb * }
+      if$
+    }
+  if$
+}
+
+% <prev name list> <new name list> compare.names <modified name list>
+FUNCTION {compare.names.aer}
+{ 's :=
+  'tempa :=
+
+%   "current.author = " s * "\\" * write$ newline$
+%   "prev.author = " tempa * "\\" * write$ newline$
+
+  tempa num.names$ 'len1.aer :=  % len1 = the number of previous authors
+  s num.names$ 'len2.aer :=         % len2 = the number of current authors
+
+% len1.aer := min(len1.aer,len2.aer)
+% len1 -> min{ the number of previous authors, the number of current authors }
+  len1.aer len2.aer >
+    { len2.aer 'len1.aer := }
+    { }
+  if$
+
+% start with an empty string, then while the components are the same
+% add "\bysame"
+  ""
+  #1 'i.aer :=
+
+  { i.aer len1.aer > not }
+    { tempa i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      =
+        { #1 i.aer <
+            { " and " * }       % \bysame で省略する著者の前につく and 
+            { }
+          if$
+          "\bysame{}" *
+          i.aer #1 + 'i.aer := } 
+        { #-1 'len1.aer := }
+      if$
+    }
+  while$
+
+% add the rest of the second string
+  { i.aer len2.aer > not }
+    { #1 i.aer <
+        { " and " * }
+        { }
+      if$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$ *
+      i.aer #1 + 'i.aer :=
+    }
+  while$
+}
+
+%%% author
+FUNCTION {format.authors}
+{ author empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer author compare.names.aer 's :=
+          author 'prev.author.aer := }
+        { author 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors}
+{ editor empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer editor compare.names.aer 's :=
+          editor 'prev.author.aer := }
+        { editor 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+      s num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.authors.alt}
+{ author empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        {"\bysame "}
+        { bst.author.pre author remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors.alt}
+{ editor empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre editor remove.ss.period.auth * }
+      if$
+      editor num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+%%% format.in.ed.booktitle
+FUNCTION {format.editors.x}
+{ editor empty$
+    { "" }
+    { bst.editor.btitle.order #0 =
+        { "" }
+        { editor num.names$ #1 >
+           { bst.editors " by " * }
+           { bst.editor  " by " * }
+          if$
+        }
+      if$
+      editor format.names *
+      bst.editor.btitle.order #0 =
+        { editor num.names$ #1 >
+           { bst.editors * }
+           { bst.editor * }
+          if$
+        }
+        { "" * }
+      if$
+    }
+  if$
+}
+
+%%% Remove commas in the cases like "?." and "?,".
+FUNCTION {remove.irrelevant.period.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #-1 #3 substring$ "?,'" =
+      s #-1 #3 substring$ "?.'" = or
+        { s #-3 global.max$ substring$ "'" * }
+        { s #-1 #4 substring$ "?,''" =
+          s #-1 #4 substring$ "?.''" = or
+            { s #-4 global.max$ substring$ "''" * }
+            { s #-1 #2 substring$ "?," =
+              s #-1 #2 substring$ "?." = or
+                { s #-2 global.max$ substring$ "" * }
+                { s #-1 #3 substring$ "?,~" =
+                  s #-1 #3 substring$ "?.~" = or
+                    { s #-4 global.max$ substring$ "?~" * }
+                    's
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% title
+FUNCTION {format.title.sub}
+{ bst.title.lower.case #0 =
+     { bst.title.pre title * bst.title.post * }
+     { bst.title.pre title "t" change.case$ * bst.title.post * }
+  if$
+}
+
+%%% title
+FUNCTION {format.title}
+{ title empty$
+  bst.hide.title #0 = not or
+    { "" }
+    { format.title.sub remove.irrelevant.period.comma }
+  if$
+}
+
+%%% title for misc.
+FUNCTION {format.misc.title}
+{ title empty$
+    { "" }
+    { bst.title.pre title * bst.title.post * }
+  if$
+}
+
+% Convert "-" to "--" (for pages field)
+FUNCTION {n.dashify}
+{ 't :=
+  ""
+  %% while$
+  { t empty$ not }
+  { t #1 #1 substring$ "-" =
+      { t #1 #2 substring$ "--" = not
+          { "--" *
+            t #2 global.max$ substring$ 't :=
+          }
+          { { t #1 #1 substring$ "-" = }
+            { "-" *
+              t #2 global.max$ substring$ 't :=
+            }
+            while$
+          }
+        if$
+      }
+      { t #1 #1 substring$ *
+       t #2 global.max$ substring$ 't :=
+      }
+    if$
+  }
+  while$
+}
+
+%%% year
+FUNCTION {format.year}
+{ year empty$
+    { "there's no year in " cite$ * warning$
+      ", " }
+    { type$ "article" =
+        { bst.year.pre year * extra.label * bst.year.post * }
+        { bst.year.na.pre year * extra.label * bst.year.na.post * }
+      if$
+    }
+  if$
+}
+
+%%% page for book
+FUNCTION {format.book.pages}
+{ pages empty$
+    { "" }
+    { bst.pages.pre pages * bst.pages.post * }
+  if$
+}
+
+%%% Attach tie for the string with two or less characters.
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+    { "~" }
+    { " " }
+  if$
+  swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+
+%%% volume for book
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+    { bst.volume.pre volume * bst.volume.post *
+      series empty$
+        'skip$
+        %% If there is series field
+        { " of " * series * bst.series.post * }
+      if$
+%       "volume and number" number either.or.check
+    }
+  if$
+}
+
+%%% series
+FUNCTION {output.series}
+{ series empty$
+    { "" }
+    { bst.series.pre series * bst.series.post * }
+ if$
+}
+
+%%% number and series
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+      bst.hide.month #0 = not or
+        % number is empty
+        { series empty$
+            { "" }
+            % series is not empty.
+            { output.series }
+          if$
+        }
+        % number is not empty$
+        { series empty$
+            { bst.number.pre number * bst.number.post * }
+            % series is not empty.
+            { bst.in bst.series.pre * series * bst.series.post *
+              bst.number.pre * number * bst.number.post * }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+%%% Number or not.
+FUNCTION {is.num}
+{ chr.to.int$
+  duplicate$ "0" chr.to.int$ < not
+  swap$ "9" chr.to.int$ > not and
+}
+
+FUNCTION {extract.num}
+{ duplicate$ 't :=
+  "" 's :=
+  { t empty$ not }
+  { t #1 #1 substring$
+    t #2 global.max$ substring$ 't :=
+    duplicate$ is.num
+      { s swap$ * 's := }
+      { pop$ "" 't := }
+    if$
+  }
+  while$
+  s empty$
+    'skip$
+    { pop$ s }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%      edition
+
+% Convert edition to 1st, 2nd, 3rd, 4th etc
+FUNCTION {eng.ord}
+{ duplicate$ "1" swap$ *
+  #-2 #1 substring$ "1" =
+     { bst.th * }
+     { duplicate$ #-1 #1 substring$
+       duplicate$ "1" =
+         { pop$ bst.st * }
+         { duplicate$ "2" =
+             { pop$ bst.nd * }
+             { "3" =
+                 { bst.rd * }
+                 { bst.th * }
+               if$
+             }
+           if$
+          }
+       if$
+     }
+   if$
+}
+
+% Convert first, second etc in edition field to 1st, 2nd (from jfm.bst)
+FUNCTION {convert.edition}
+{ edition extract.num "l" change.case$ 's :=
+  s "first" = s "1" = or
+    { bst.first }
+    { s "second" = s "2" = or
+        { bst.second }
+        { s "third" = s "3" = or
+            { bst.third }
+            { s "fourth" = s "4" = or
+                { bst.fourth }
+                { s "fifth" = s "5" = or
+                    { bst.fifth }
+                    { s #1 #1 substring$ is.num
+                        { s eng.ord }
+                        { edition }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% edition
+FUNCTION {format.edition}
+{ edition empty$
+    { "" }
+    { output.state mid.sentence =
+        { bst.edition.pre convert.edition "l" change.case$ * bst.edition.post * }
+        { bst.edition.pre convert.edition "t" change.case$ * bst.edition.post * }
+      if$
+    }
+  if$
+}
+
+%%% month
+FUNCTION {format.month}
+{ month empty$
+  bst.hide.month #0 = not or
+    { "" }
+    { bst.month.pre month * bst.month.post * }
+  if$
+}
+
+%%% year and month
+FUNCTION {format.date}
+{ format.month format.year *
+}
+
+%%% Is multiple pages like 1-100?
+FUNCTION { multi.page.check }
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+
+%%% pages
+FUNCTION {format.pages}
+{ pages empty$
+    { "" }
+    { pages multi.page.check
+      { bst.pages.pre pages n.dashify tie.or.space.connect * bst.pages.post }
+      { bst.page.pre pages tie.or.space.connect * bst.page.post }
+     if$
+    }
+ if$
+}
+
+%%% number
+FUNCTION {format.number}
+{ number empty$
+  bst.hide.number #0 = not or
+    { "" }
+    { bst.number.pre number * bst.number.post * }
+  if$
+}
+
+%%% volume
+FUNCTION {format.volume}
+{ volume empty$
+    'skip$
+    { bst.volume.pre volume * bst.volume.post *
+      bst.year.position #3 =
+        { format.year * }
+        'skip$
+      if$
+    }
+  if$
+}
+
+%%% number, page
+FUNCTION {format.number.pages}
+{ number empty$
+    { format.pages }
+    { format.number format.pages * }
+  if$
+}
+
+%%% volume, page
+FUNCTION {format.volume.pages}
+{ volume empty$
+    { format.pages }
+    { format.volume format.pages * }
+  if$
+}
+
+%%% volume, number, page
+FUNCTION {format.volume.number.pages}
+{ volume empty$
+    { number empty$
+        { format.pages }
+        { format.number format.pages * }
+      if$
+    }
+    { number empty$
+        { format.volume format.pages * }
+        { format.volume format.number * format.pages * }
+      if$
+    }
+  if$
+}
+
+% volume, number, page
+FUNCTION {format.vol.num.pages}
+{ volume empty$
+    %% volume is empty.
+    { number empty$
+        %% number is empty.
+        { pages empty$
+            % warning
+            { "there is no volume, number, and pages in " cite$ * warning$ "" } 
+            { "" format.pages * }
+         if$
+        }
+        %% number is not empty.
+        % warning
+        { "there's a number but no volume in " cite$ * warning$
+          format.number.pages }
+     if$
+    }
+    %% volume is not empty.
+    { number empty$
+        %% number is empty.
+        { format.volume.pages }
+        %% number is not empty.
+        { format.volume.number.pages }
+     if$
+    }
+  if$
+}
+
+%%% chapter
+FUNCTION {format.chapter}
+{ chapter empty$
+    { "" }
+    { type empty$
+        { bst.chapter.pre chapter tie.or.space.connect * bst.chapter.post }
+        { ", " * type " " * chapter * }
+      if$
+    }
+  if$
+}
+
+%%% chapter, pages
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    { pages empty$
+        { "" }
+        { "" format.pages * }
+      if$
+    }
+    { pages empty$
+        { "" format.chapter * }
+        { "" format.chapter * format.pages * }
+      if$
+    }
+  if$
+}
+
+%%% editor and booktitle
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+    { "" }
+    { editor empty$
+        { bst.in format.btitle * }
+        { bst.editor.btitle.order #0 =
+            { bst.in format.editors.x * " " * format.btitle * }
+            { bst.in format.btitle * " " * format.editors.x * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% howpublished
+FUNCTION {format.howpublished}
+{ howpublished empty$
+    { "" }
+    { bst.howpublished.pre howpublished * bst.howpublished.post * }
+  if$
+}
+
+%%% address
+FUNCTION {format.address}
+{ address empty$
+    { "" }
+    { bst.address.pre address * bst.address.post * }
+  if$
+}
+
+%%% publisher
+FUNCTION {format.publisher}
+{ publisher empty$
+    { "" }
+    { bst.publisher.pre publisher * bst.publisher.post * }
+  if$
+}
+
+%%% organization
+FUNCTION {format.organization}
+{ organization empty$
+    { "" }
+    { bst.organization.pre organization * bst.organization.post * }
+  if$
+}
+
+%% publisher and address
+FUNCTION {output.publisher.address}
+{ address empty$
+    { format.publisher "publisher" output.check.nocomma }
+    { bst.address.position #0 = 
+        { format.address output.nocomma
+          format.publisher "publisher" output.check.nocomma }
+        { format.publisher "publisher" output.check.nocomma
+          format.address output.nocomma }
+      if$
+    }
+  if$
+}
+
+%% address, organization, publisher
+FUNCTION {output.address.organization.publisher}
+{ address empty$
+    %% address is empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            'skip$
+            { format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            { format.organization "organization" output.check.nocomma }
+            { format.organization "organization" output.check.nocomma
+              format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+     if$
+    }
+    %% address is not empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            %% publisher is empty
+            { format.address output.nocomma }
+            %% publisher is not empty
+            { bst.address.position #0 =
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            %% publisher is empty
+            { format.organization "organization" output.check.nocomma
+              format.address output.nocomma }
+            %% publisher is not empty
+            { format.organization "organization" output.check.nocomma
+              bst.address.position #0 = 
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+     if$
+    }
+  if$
+}
+
+%%% misc
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+    'skip$
+    { pop$ " " type * }
+  if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+    { bst.techrep }
+    { " " type * }
+  if$
+  number empty$
+    { "t" change.case$ }
+    { number tie.or.space.connect }
+  if$
+}
+
+%%% phdthesis
+FUNCTION {format.phd}
+{ bst.phdthesis }
+
+%%% mastersthesis
+FUNCTION {format.mthesis}
+{ bst.mthesis }
+
+%%% school
+FUNCTION {format.school}
+{ school empty$
+    { "" }
+    { bst.school.pre school * bst.school.post * }
+  if$
+}
+
+%%% institution
+FUNCTION {format.institution}
+{ institution empty$
+    { "" }
+    { bst.institution.pre institution * bst.institution.post * }
+  if$
+}
+
+%%% remove first ? characters.
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+
+FUNCTION {format.note}
+{ note empty$
+    { "" }
+    { bst.note.pre note * bst.note.post * }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        \havarditem
+
+FUNCTION {output.bibitem}
+{ newline$
+  "\harvarditem[" write$
+  alabel write$                 % alabel <- abbreviated citation
+  "]{" write$
+  flabel write$                 % flabel <- full citation
+  "}{" write$
+  cyear write$
+  % cyear = year
+  "}{" write$
+  cite$ write$                  % cite$ -> pusch keyword
+  "}" write$
+  % If number index is on
+  bst.use.number.index #0 =
+     'skip$
+     { index #1 + 'index :=
+       "" 'preone :=
+       "" 'preten :=
+       bst.number.index.digit "1" =
+         'skip$
+         { bst.number.index.digit "2" =
+           { "\hskip0.5em" 'preone := }
+           { bst.number.index.digit "3" =
+              { "\hskip1em" 'preone :=
+                "\hskip0.5em" 'preten := }
+              'skip$
+             if$
+           }
+         if$
+         }
+       if$  
+     }
+  if$
+  newline$
+  before.all 'output.state :=
+  ""
+  % number index
+  bst.use.number.index #0 =
+     'skip$
+     { index #10 <
+         % Insert spaces according to digit of number index.
+         { preone }
+         { index #100 <
+             { preten }
+             { "" }
+           if$
+         }
+       if$
+       bst.number.index.pre * index int.to.str$ * bst.number.index.post * write$
+     }
+ if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        article
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.journal "journal" output.check.nocomma
+  bst.year.position #2 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+  format.vol.num.pages output.nocomma
+
+  bst.year.position #1 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        book
+
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check 
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  format.edition output.nocomma
+  format.book.pages output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        booklet
+
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output.nocomma
+  format.year output.nocomma
+  format.misc.title "title" output.check.nocomma
+  format.howpublished output.nocomma
+  format.address output.nocomma
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inbook
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+%   format.book remove.pre.comma "title" output.check.nocomma
+  format.book "title" output.check.nocomma
+  format.edition output.nocomma
+
+  format.bvolume output.nocomma
+  format.chapter.pages "chapter and pages" output.check.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       incollection
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.edition output.nocomma
+  format.chapter.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inproceedings
+
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  format.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       conference
+
+FUNCTION {conference}
+{ inproceedings }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       manual
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization empty$
+        'skip$
+        { organization output.nonnull.nocomma
+          address output.nocomma
+        }
+      if$
+    }
+    { format.authors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  author empty$
+    { organization empty$
+        { format.address new.block.check
+          format.address output.nocomma
+        }
+        'skip$
+      if$
+    }
+    { output.address.organization.publisher }
+  if$
+  format.edition output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       mastersthesis
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.mthesis format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       misc
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Online
+
+FUNCTION {online}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       phdthesis
+
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  format.phd
+  format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  address empty$
+    'skip$
+    { format.address output.nocomma }
+  if$
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       proceedings
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization output.nocomma }
+    { format.editors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.btitle remove.pre.comma "title" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       techreport
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.tr.number output.nonnull.nocomma
+  format.institution "institution" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       unpublished
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  bst.year.position #0 = not
+    { format.date remove.pre.comma output.nocomma }
+    { month empty$
+        'skip$
+        { format.month remove.pre.comma output.nocomma }
+      if$
+    }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note "note" output.check.nocomma
+  fin.entry
+}
+
+FUNCTION {default.type}
+{ misc }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Alias for month names:
+
+MACRO {jan} {"January"}
+MACRO {feb} {"February"}
+MACRO {mar} {"March"}
+MACRO {apr} {"April"}
+MACRO {may} {"May"}
+MACRO {jun} {"June"}
+MACRO {jul} {"July"}
+MACRO {aug} {"August"}
+MACRO {sep} {"September"}
+MACRO {oct} {"October"}
+MACRO {nov} {"November"}
+MACRO {dec} {"December"}
+
+%%% Read entries:
+READ
+
+%%% Variable for remembering the order of citation.
+INTEGERS { order.num }
+FUNCTION {initialize.order.num}
+{
+  #1 'order.num :=
+}
+%%% Initialize a variables
+EXECUTE {initialize.order.num}
+
+%%% Variable for remembering the order of citation.
+FUNCTION {set.order.cited}
+{
+  order.num 'order.cited :=
+  #1 order.num + 'order.num :=
+}
+%%% Iterate for all entries:
+ITERATE {set.order.cited}
+
+%%% check the value of nameorder field.
+FUNCTION {set.nameorder}
+{ nameorder empty$
+    { "" 'nameorder.temp := }
+    { nameorder 'nameorder.temp := }
+  if$
+}
+%%% Iterate for all entries:
+ITERATE {set.nameorder}
+
+%%% Remove symbols and convert to lowercase.
+FUNCTION {sortify}
+{ purify$ "l" change.case$ }
+
+%%% names for sorting
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { nameptr #1 >
+        { ", " * }
+        'skip$
+      if$
+      s nameptr "{ll}{ f}{ j}" format.name$ 't :=
+      nameptr numnames = t "others" = and
+        { bst.and.others.output *}
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.names.abb}
+{ 's :=
+  s num.names$ 'numnames :=
+  numnames bst.and.others.num <
+     { s sort.format.names }
+     { s #1 "{ll}{ f}{ j}" format.name$ " zz " * }
+  if$
+}
+
+%%% Label for full author name.
+FUNCTION {format.lab.names.full}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{vv~}{ll}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                  { bst.and.nameorder * t * }
+                  { ", " * t * }
+                if$
+              }
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 > 
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.ands * t * }
+                        if$
+                      }
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.and * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+  numnames #1 > #1 #2 = and {", eds" *} {} if$
+  numnames #1 = #1 #2 = and {", ed" *} {} if$
+}
+
+%%% laberl for abbreviated author name.
+FUNCTION {format.lab.names.abb}
+{ 's :=
+   s num.names$ 'numnames :=
+   numnames bst.and.others.num <
+     % if the number of authors is less than bst.and.others.num, full name.
+     { s format.lab.names.full }
+     % if the number of authors is equal or more than bst.and.others.num, abbreviated name.
+     { s #1 "{ll}" format.name$ bst.and.others.output * }
+   if$
+}
+
+%%% abbreviated author
+FUNCTION {author.key.label.abb}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.key.label.full}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {format.names.full.wo.and}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{ll}{, ff}{, jj}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { " " * t * }
+              { t "others" =
+                  { " " * }
+                  { numnames #2 > 
+                      { " " * t * }
+                      { " " * t * }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+}
+
+FUNCTION {author.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.editor.key.full.wo.and}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.names.full.wo.and }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {editor.key.organization.key.full.wo.and}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.key.organization.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+%%% abbreviated author
+FUNCTION {author.editor.key.label.abb}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.abb }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.editor.key.label.full}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.full }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.full}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.abb}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.full}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.full }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.abb}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.abb }
+  if$
+}
+
+%%% Convert numbers: 0->9, 1->8, 2->7,..., 9->0
+FUNCTION {reverse.num}
+{ 's :=
+  s "1" =
+    { "8" 'year.num := }
+    { s "2" =
+        { "7" 'year.num := }
+        { s "3" =
+            { "6" 'year.num := }
+            { s "4" =
+                { "5" 'year.num := }
+                { s "5" =
+                    { "4" 'year.num := }
+                    { s "6" =
+                        { "3" 'year.num := }
+                        { s "7" =
+                            { "2" 'year.num := }
+                            { s "8" =
+                                { "1" 'year.num := }
+                                { s "9" =
+                                    { "0" 'year.num := }
+                                    { s "0" =
+                                        { "9" 'year.num := }
+                                        { "9" 'year.num := }
+                                    if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+  year.num
+}
+
+%%% Convert year (large number -> small number)
+FUNCTION {convert.year}
+{ 't := 
+  bst.reverse.year #0 =
+    { t 'tt := }
+    { t #1 #1 substring$ reverse.num 
+      t #2 #1 substring$ reverse.num *
+      t #3 #1 substring$ reverse.num *
+      t #4 #1 substring$ reverse.num * 'tt := }
+  if$
+  tt
+}
+
+%%% cyear
+FUNCTION {calc.cyear}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.full.wo.and
+    { type$ "proceedings" =
+        'editor.key.organization.key.full.wo.and
+        { type$ "manual" =
+            'author.key.organization.key.full.wo.and
+            'author.key.full.wo.and
+          if$
+        }
+      if$
+    }
+  if$
+  duplicate$
+  year empty$
+    { "2199" 'cyear := }
+    { year 'cyear := }
+  if$
+  year empty$
+    { " " "2199" convert.year * field.or.null * }
+    { " " year convert.year * field.or.null * }
+  if$
+  sortify 'sort.label :=
+  % For debug
+  econ.debug #0 = not
+    { "sort.label = ``\texttt{" write$
+      sort.label write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+ pop$
+}
+
+FUNCTION {calc.sort.label.abb}
+{ author empty$
+    { editor empty$
+       { "" }
+       { editor 's := }
+      if$
+    }
+    { author 's := }
+  if$
+  s sort.format.names.abb 't :=
+  year empty$
+    { t sortify " " * "2199" convert.year * 'sort.label.abb := }
+    { t sortify " " * year convert.year * 'sort.label.abb := }
+  if$
+  econ.debug #0 = not
+    { "sort.label.abb = ``\texttt{" write$
+      sort.label.abb write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+  if$
+}
+
+%%% flabel
+FUNCTION {calc.flabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.full
+    { type$ "proceedings" =
+        'editor.key.organization.label.full
+        { type$ "manual" =
+            'author.key.organization.label.full
+            'author.key.label.full
+          if$
+        }
+      if$
+    }
+  if$
+  'flabel :=
+  author empty$
+    'skip$
+    { author num.names$ 'numnames :=
+      numnames bst.max.author.num >
+        { alabel 'flabel := }
+        'skip$
+      if$
+    }
+  if$
+  % For debug
+  econ.debug #0 = not
+    { "flabel = ``\texttt{" write$
+      flabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% alabel
+FUNCTION {calc.alabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.abb
+    { type$ "proceedings" =
+        'editor.key.organization.label.abb
+        { type$ "manual" =
+            'author.key.organization.label.abb
+            'author.key.label.abb
+          if$
+        }
+      if$
+    }
+  if$
+  'alabel :=
+  % For debug
+  econ.debug #0 = not
+    { "alabel = ``\texttt{" write$
+      alabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% title for sorting
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+
+%%% author for sorting
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+%%% editor for sorting
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+
+%%% 1,...,9 -> 001,...,009
+%%% 10,...,99 -> 010,...,099
+FUNCTION {add.zero.to.number}
+{ 's :=
+    s text.length$ #1 =
+      { "00" s * }
+      { s text.length$ #2 =
+          { "0" s * }
+          { s }
+        if$
+      }
+   if$
+}
+
+%% entry type
+FUNCTION {bst.sort.entry.type.order}
+{ 'item.type :=
+  item.type "article" =
+    { "01" }
+    { item.type "book" =
+        { "02" }
+        { item.type "booklet" =
+            { "03" }
+            { item.type "comment" =
+                { "04" }
+                { item.type "conference" =
+                    { "05" }
+                    { item.type "inbook" =
+                        { "06" }
+                        { item.type "incollection" =
+                            { "07" }
+                            { item.type "inproceedings" =
+                                { "08" }
+                                { item.type "manual" =
+                                    { "09" }
+                                    { item.type "masterthesis" =
+                                        { "10" }
+                                        { item.type "misc" =
+                                           { "11" }
+                                           { item.type "phdthesis" =
+                                              { "12" }
+                                              { item.type "proceedings" =
+                                                 { "13" }
+                                                 { item.type "techreport" =
+                                                    { "14" }
+                                                    { item.type "unpublished" =
+                                                       { "15" }
+                                                       { "16" }
+                                                      if$
+                                                    }
+                                                   if$
+                                                 }
+                                                if$
+                                              }
+                                             if$
+                                           }
+                                          if$
+                                        }
+                                      if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+}
+
+%%% Create sort.key$: absorder -> author -> year -> order -> month -> title.
+FUNCTION {presort.one}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " *
+  sort.label.abb *
+  " " *  
+  type$ "book" = type$ "inbook" = or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  * " " *
+  " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " * sort.label * " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% Codes for debugging
+FUNCTION {calc.alabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.alabel: alabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {calc.flabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.flabel: flabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {presort.one.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (1st time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (2nd time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.cyear.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.cyear: sort.label = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.sort.label.abb.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.sort.label.abb: sort.label.abb = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+%%% alabel
+EXECUTE {calc.alabel.mess}
+ITERATE {calc.alabel}
+
+%%% flabel
+EXECUTE {calc.flabel.mess}
+ITERATE {calc.flabel}
+
+%%% cyear and sort.label
+EXECUTE {calc.cyear.mess}
+ITERATE {calc.cyear}
+
+%%%
+EXECUTE {calc.sort.label.abb.mess}
+ITERATE {calc.sort.label.abb}
+
+%%% Sorting by $sort.key (first time)
+%
+% Sorting is done in two times. This is the first time.
+%
+EXECUTE {presort.one.mess}
+ITERATE {presort.one}
+SORT
+
+FUNCTION {forward.pass}
+{ bst.use.bysame #0 = bst.use.bysame #2 = or
+    % Not use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+    }
+    % Use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+      author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+      if$
+      'this.author :=
+      % format.names 'this.author :=
+      this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {reverse.pass}
+{ next.extra "b" =
+    { "a" 'extra.label := }
+    'skip$
+  if$
+  extra.label empty$ not
+    { cyear extra.label * }
+    { cyear "" * }
+  if$
+  "" field.or.null *
+  'cyear :=
+  extra.label 'next.extra :=
+}
+
+%%% \bysame
+ITERATE {forward.pass}
+
+REVERSE {reverse.pass}
+
+%%% Sorting by sort.key$ (second time)
+EXECUTE {presort.two.mess}
+ITERATE {presort.two}
+SORT
+
+FUNCTION {reset.prev.author}
+{ "xxyyzz" 'prev.author := }
+
+EXECUTE {reset.prev.author}
+
+FUNCTION {forward.pass.two}
+{ bst.use.bysame #1 = 
+    { author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+     if$
+     'this.author :=
+     this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+     if$
+    }
+   'skip$
+  if$
+}
+
+ITERATE {forward.pass.two}
+
+FUNCTION{punctuation}
+{
+  "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" write$ newline$
+  "%  This bbl file is created by " econ.file * " ver." * econ.version *          write$ newline$
+  "%  The latest " econ.file * " is available at " *			write$ newline$
+  "%  <https://github.com/ShiroTakeda/econ-bst>"                        write$ newline$ newline$
+}
+
+EXECUTE {punctuation}
+
+FUNCTION {begin.bib}
+{
+  preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  bst.use.bysame #0 =
+     % Not use \bysame.
+     'skip$
+     % Use \bysame.
+     { "%%% Definition of \bysame" write$ newline$
+       "\ifx\undefined\bysame" write$ newline$
+       "\newcommand{\bysame}{" bst.bysame.definition * "}" *
+       write$ newline$
+       "\fi" write$ newline$ newline$ }
+  if$
+  %% When number index is attached to the beginning of each item.
+  bst.use.number.index #0 =
+     'skip$
+     { bst.number.index.digit "1" =
+         % one digit.
+         { bst.number.index.bibhang.one }
+         { bst.number.index.digit "2" =
+            % two digits.
+            { bst.number.index.bibhang.ten }
+            % three or more digits.
+            { bst.number.index.bibhang.hund }
+           if$
+         }
+       if$
+       'hang :=
+       "%%% Redefinition of \bibhang" write$ newline$
+       "\ifx\undefined\bibhang" write$ newline$
+       "\relax" write$ newline$
+       "\else" write$ newline$
+       "\setlength{\bibhang}{"
+       hang * "}" * write$ newline$ 
+       "\fi" write$ newline$ newline$
+       }
+  if$
+  "\begin{thebibliography}{xxx}" write$ newline$
+
+  %% Initialize the variable `index'.
+  #0 'index :=
+}
+
+FUNCTION {end.bib}
+{ newline$ "\end{thebibliography}" write$ newline$ }
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+EXECUTE {end.bib}
+
+%  --------------------
+%  Local Variables:
+%  fill-column: 78
+%  mode: bst
+%  End:
diff --git a/Master/texmf-dist/bibtex/bst/econ-bst/econ-jpe.bst b/Master/texmf-dist/bibtex/bst/econ-bst/econ-jpe.bst
new file mode 100644
index 00000000000..ee6d4364ab5
--- /dev/null
+++ b/Master/texmf-dist/bibtex/bst/econ-bst/econ-jpe.bst
@@ -0,0 +1,4802 @@
+%% econ.bst: BibTeX style file for papers in economics.
+%
+% Author: Shiro Takeda
+% Maintainer: Shiro Takeda
+% Copyright (C) 2001-2018 Shiro Takeda
+% First-written:       <2007/07/28>
+% Version: 2.7
+% Keywords: TeX, BibTeX, bst 
+% URL: https://github.com/ShiroTakeda/econ-bst
+
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% The Current Maintainer of this work is Shiro Takeda.
+
+%% Main features of econ.bst.
+
+% "econ.bst" is a BibTeX style file for economics. It provids the following
+% features:
+
+% 1) The author-year type citation (you need "natbib.sty" as well).
+% 2) Reference style used in economics papers ("econ.bst" is not a BibTeX style
+%    for a specific journal).
+% 3) Highly customizable.  You can easily customize reference style as you wish.
+% 4) You can use "certified random order" proposed by Ray ⓡ Robson (2018)
+%    (http://dx.doi.org/10.1257/aer.20161492).
+
+% Bug reports, requests and suggestions are welcome. 
+
+% For changelogs, see CHANGES.txt file.
+
+% version number
+FUNCTION {econ.version} { "2.7" }
+
+% File name
+FUNCTION {econ.file} { "econ-jpe.bst" }
+
+% Debug mode. Non-zero makes debug mode on.
+FUNCTION {econ.debug}
+{ #0 }    % Debug mode off (default).
+% { #1 }    % Debug mode on.
+
+ENTRY
+  %%% Declaration of field
+  { access address author booktitle chapter doi edition editor howpublished
+    institution journal key month note number organization pages publisher
+    school series title type url volume year
+  % Fields specific to econ.bst
+    order absorder nameorder
+  }
+
+  % Definition of entry variable.  The entry variable is a variable which has
+  % different values according to different entries.
+  %% Integer entry variable:
+  { order.cited }
+
+  %% String entry variable
+  { label cyear flabel alabel extra.label sort.label sort.label.abb
+    extra.label.bysame nameorder.temp jname }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Use \bysame or not.
+%
+% If set to #0, \bysame is not used.
+% If set to #1, \bysame is used 
+% If set to #2, \bysame is used (alternative abbreviation style).
+%
+% Note that integer number is expressed as # + integer in bst file.
+% \bysame is the function that abbreviates succession of the same authors' name by ---.
+%
+% See econ-sample.pdf for details.
+% 
+FUNCTION {bst.use.bysame}
+% { #0 }    % Not use \bysame
+{ #1 }    % -> Use \bysame (default)
+% { #2 }    % -> Use \bysame of alternative style.
+
+% The definition of \bysame command.
+%
+FUNCTION {bst.bysame.definition}
+{ "\hskip.3em \leavevmode\rule[.5ex]{3em}{.3pt}\hskip0.5em" } % (default)
+% { "\leavevmode\hbox to\leftmargin{\hrulefill\,\,}" } % If you set #2 to bst.use.bysame, use this.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% The order of fist and last name.
+%
+FUNCTION {bst.author.name}
+{ #0 }    % (default)
+% { #1 }
+% { #2 }
+
+% Case of #0: First author -> last-first, other authors -> first-last. 
+% Fujita, Masahisa, Paul R. Krugman, and Anthony J. Venables. 
+
+% Case of #1: All authors -> last-first
+% Fujita, Masahisa, Krugman, Paul R., and Venables, Anthony J.
+
+% Case of #2: All authors -> first-last
+% Masahisa Fujita, Paul R. Krugman, and Anthony J. Venables.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Abbreviate first name of authors (editors):
+%
+FUNCTION {bst.first.name.initial}
+{ #0 }    % #0 -> full letters (default).
+% { #1 }    % Non-zero -> initial letter only.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Decapitalize of strings in title field.
+%
+FUNCTION {bst.title.lower.case}
+{ #0 }    % If #0, not decapitalize title (default).
+% { #1 }    % If non-#0, decapitalize title
+
+% Hide title filed.
+%
+FUNCTION {bst.hide.title}
+{ #0 }    % #0 -> Title field is displayed (default)
+% { #1 }    % Non-zer -> Title field is hidden 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide month.
+%
+FUNCTION {bst.hide.month}
+{ #0 }    % #0 -> show month field (default).
+% { #1 }    % non-#0 -> hide month field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Attach number index like plain.bst.
+%
+FUNCTION {bst.use.number.index}
+{ #0 }    % Not use number index (default).
+% { #1 }    % Non-#0 -> Use number index
+
+% The string before number index:
+%
+FUNCTION {bst.number.index.pre}
+{ "[" }    % (default)
+
+% The string after number index.  Adjustment is recommended.
+%
+FUNCTION {bst.number.index.post}
+{ "]\hskip1.0em " }    % (default)
+
+% Maximum digit of number index:
+% If the number of reference items >= 100, set 3 to this function.
+% If the number of reference items < 100, set 2 to this function.
+% If the number of reference items < 10, set 1 to this function.
+%
+FUNCTION {bst.number.index.digit}
+{ "2" }    % (default)
+% { "3" }
+
+% The functions below are used to adjust space and postion.  If you use fonts
+% other than computer modern fonts, you had better make adjustments.
+%
+% Setting for bst.number.index.digit = 1:
+FUNCTION {bst.number.index.bibhang.one}
+{ "2.05em" }    % (default)
+% Setting for bst.number.index.digit = 2:
+FUNCTION {bst.number.index.bibhang.ten}
+{ "2.55em" }    % (default)
+% Setting for bst.number.index.digit = 3:
+FUNCTION {bst.number.index.bibhang.hund}
+{ "3.05em" }    % (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Position of "year":
+%
+% You can choose the position of year by this function.
+%
+% If set to #0, year is placed right after "author".
+% If set to non-zero, year is placed at the end (before note field) except for
+% aritcle type entry. 
+%
+% In article type entry, the position of year changes according to the
+% following rule:
+% 
+% #1 -> year is placed at the end.
+% #2 -> year is placed after journal name in aritcle type entry.
+% #3 -> year is placed after volume in aritcle type entry.
+%
+FUNCTION {bst.year.position}
+{ #0 }    % (default).
+% { #1 }    % Last place before note.
+% { #2 }    % After journal name for aticle type entry.
+% { #3 }    % After volume for aticle type entry.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If 0, references are sorted by old documents -> recent documents.  If
+% non-zero, reverse order.
+FUNCTION {bst.reverse.year}
+{ #0 }    % Normal order (old -> recent) (default).
+% { #1 }    % inverse order (recent -> old)
+
+% If non-zero, sort references by using year field as the primary key
+% (chronological sorting).
+FUNCTION {bst.sort.year}
+{ #0 }    % Normal case: year is used as the sorting key next to author (default).
+% { #1 }    % year is used as the primary sorting key.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If non-zero, references are listed in citation order.
+%
+FUNCTION {bst.no.sort}
+{ #0 }    % (default)
+% { #1 }    % listed in citation order.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Non-zero -> sort references by entry type (article, book, incollection etc.)
+%
+FUNCTION {bst.sort.entry.type}
+{ #0 }    % #0 -> Normal (not sort references by entry type) (default).
+% { #1 }    % Non-zero -> sort references by entry type.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use absorder field to sort items.  Otherwise, ignore absorder field.
+%
+FUNCTION {bst.notuse.absorder.field}
+{ #0 }    % #0 -> Use absorder (default).
+% { #1 }    % Non-#0 -> Not use absorder.
+%
+% Order of priority to sort items
+% 
+% absorder -> author -> year -> order -> month -> title
+%
+% wehre absorder and order fields are specific to econ.bst.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use order field to sort items.  Otherwise, ignore order field.
+% Note: order field is specific to econ.bst.
+FUNCTION {bst.notuse.order.field}
+{ #0 }    % #0 -> Use order field (default).
+% { #1 }    % Non-#0 -> not use order field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%     and
+
+%%% String used to separate author names in references.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.and}
+{ ", and " }
+% { " and " }    % (default)
+
+%%% String used to separate author names in references (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.ands}
+{ ", and " }    % (default)
+
+%%% String used to separate author names in citation part.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.cite.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in citation part (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.cite.ands}
+{ " and " }    % (default)
+
+%%% If you want to use random author order for some bibliography entries, set
+% non-zero to this function.
+% 
+FUNCTION {bst.use.nameorder}
+{ #1 }	% Use random order (default)
+% { #0 }	% Not use random order
+
+%%% String used to separate author names in references for the entry of random
+% author order.
+%
+FUNCTION {bst.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+%%% String used to separate author names in citation part for the entry of
+% random author order
+%
+FUNCTION {bst.cite.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Author names in the citation part are abbreviated by et al. if the number of
+% authors is greater or equal to bst.and.others.num.
+FUNCTION {bst.and.others.num}
+{ #3 }    % If the number of authors is greater or equal to three (default).
+
+% If the number of authors is greater or equal to bst.max.author.num, only
+% first author is listed and other authors' names are abbreviated as "et al.".
+FUNCTION {bst.max.author.num}
+{ #12 }    % If the number of authors is greater or equal to 12 (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Strings used when abbreviating multiple-authors in citation part.
+FUNCTION {bst.and.others}
+{ " et~al." }    % (default)
+
+% Strings used when abbreviating multiple-authors in citation part for entries
+% with random author order.
+FUNCTION {bst.and.others.nameorder}
+{ " \textcircled{r}~al." }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       author 
+
+% The string before author:
+%
+FUNCTION {bst.author.pre}
+{ "" }    % (default)
+
+% The string after author:
+%
+FUNCTION {bst.author.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       year
+
+% The string before year only for aritcle type entry.
+%
+FUNCTION {bst.year.pre}
+{ " " }
+% { " (" }    % (default)
+
+% The string after year only for aritcle type entry.
+%
+FUNCTION {bst.year.post}
+{ "." }
+% { ") " }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.pre}
+{ " " }
+% { " (" }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.post}
+{ "." }
+% { ") " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       title (except for title in book)
+
+% The string before title:
+%
+FUNCTION {bst.title.pre}
+{ "``" }    % (default)
+
+% The string after title:
+%
+FUNCTION {bst.title.post}
+{ ".''" }
+% { ",''" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       tile for book:
+
+% The string before book title:
+%
+FUNCTION {bst.book.pre}
+{ " \textit{" }    % (default)
+
+% The string after book title:
+%
+FUNCTION {bst.book.post}
+{ "}. " }
+% { "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       booktitle
+
+% The string before booktitle:
+%
+FUNCTION {bst.btitle.pre}
+{ " \textit{" }    % (default)
+
+% The string after booktitle:
+%
+FUNCTION {bst.btitle.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       journal name
+
+% The string before journal name:
+%
+FUNCTION {bst.journal.pre}
+{ " \textit{" }    % (default)
+
+% The string after journal name:
+%
+FUNCTION {bst.journal.post}
+{ "}." }
+% { "}" }    % (default)
+
+% Use the abbreviated journal name
+%
+% If set to #0, do not use abbreviated journal name.
+% If set to non-#0, use abbreviated journal name.
+%
+FUNCTION {bst.journal.name.abb}
+% { #0 }    % (default)
+{ #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       editor notation:
+
+% The string that indicates multiple editors:
+%
+FUNCTION {bst.editors}
+{ " eds. " }    % (default)
+
+% The string that indicates single editor:
+%
+FUNCTION {bst.editor}
+{ " ed. " }    % (default)
+
+% Order of editor and booktitle in incollection and inproceedings entries.
+%
+% If set to #0: 	editors -> booktitle order
+% If set to non-zero:	booktitle -> editors order
+%
+FUNCTION {bst.editor.btitle.order}
+{ #1 }
+% { #0 }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       edition
+
+% The string before edition:
+%
+FUNCTION {bst.edition.pre}
+{ ", " }    % (default)
+
+% The string after edition:
+%
+FUNCTION {bst.edition.post}
+{ " edition" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       volume
+
+% The string before volume:
+%
+FUNCTION {bst.volume.pre}
+{ " " }
+% { ", " }    % (default)
+
+% The string after volume:
+%
+FUNCTION {bst.volume.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       number
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide number.  If non-zero, number is suppressed. 
+FUNCTION {bst.hide.number}
+{ #0 }    % #0 -> show number field (default)
+% { #1 }    % non-#0 -> Hide number field.
+
+% The string before number:
+%
+FUNCTION {bst.number.pre}
+{ " (" }    % (default)
+
+% The string after number:
+%
+FUNCTION {bst.number.post}
+{ "): " }
+% { ")" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       in 
+
+% In
+%
+FUNCTION {bst.in}
+{ " In " }
+% { " in " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       page
+
+% The string before page (multiple pages):
+%
+FUNCTION {bst.pages.pre}
+{ " " }
+% { ", " }    % (default)
+
+% The string before page:
+%
+FUNCTION {bst.page.pre}
+{ ", " }    % (default)
+
+% The string after page (multiple pages):
+%
+FUNCTION {bst.pages.post}
+{ "" }    % (default)
+
+% The string after page:
+%
+FUNCTION {bst.page.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       chapter
+
+% The string before chapter:
+%
+FUNCTION {bst.chapter.pre}
+{ ", Chap." }    % (default)
+
+% The string after chapter:
+%
+FUNCTION {bst.chapter.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       month
+
+% The string before month:
+%
+FUNCTION {bst.month.pre}
+{ ", " }    % (default)
+
+% The string after month:
+%
+FUNCTION {bst.month.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       address
+% The string before address:
+%
+FUNCTION {bst.address.pre}
+{ ", " }    % (default)
+
+% The string after address:
+%
+FUNCTION {bst.address.post}
+{ "" }    % (default)
+
+% You can choose the order of address and publisher by this function.
+%
+% If #0,	address -> publisher order (the default value).
+% If non-zero,	publisher -> address order.
+
+FUNCTION {bst.address.position}
+{ #0 }    % Address is placed before publisher (default)
+% { #1 }    % Address is placed after publisher 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       publisher
+
+% The string before publisher:
+%
+FUNCTION {bst.publisher.pre}
+{ ": " }    % (default)
+
+% The string after publisher:
+%
+FUNCTION {bst.publisher.post}
+{ "," }
+% { "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       series
+
+% The string before series:
+%
+FUNCTION {bst.series.pre}
+{ ", " }    % (default)
+
+% The string after series:
+%
+FUNCTION {bst.series.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       organization
+
+% The string before organization:
+%
+FUNCTION {bst.organization.pre}
+{ ", " }    % (default)
+
+% The string after organization:
+%
+FUNCTION {bst.organization.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       school
+
+% The string before school:
+%
+FUNCTION {bst.school.pre}
+{ ", " }    % (default)
+
+% The string after school:
+%
+FUNCTION {bst.school.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       institution
+
+% The string before institution:
+%
+FUNCTION {bst.institution.pre}
+{ ", " }    % (default)
+
+% The string after institution:
+%
+FUNCTION {bst.institution.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       howpublished
+
+% The string before howpublished:
+%
+FUNCTION {bst.howpublished.pre}
+{ " " }    % (default)
+
+% The string after howpublished:
+%
+FUNCTION {bst.howpublished.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       url
+
+% Show or Hide url.  If non-zero, url is displayed. Otherwise, url is suppressed. 
+FUNCTION {bst.show.url}
+{ #1 }    % non-#0 -> Show url field (default)
+% { #0 }    % #0 -> Not show url field.
+
+% The string before url:
+%
+FUNCTION {bst.url.pre}
+{ ", \url{" }	% (default)
+
+% The string after url:
+%
+FUNCTION {bst.url.post}
+{ "}" }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Access
+
+% This setting is valid only if there are "access" field in bib
+% files. The value of access field indicates accessed date for URL.
+
+% The string before access.
+FUNCTION {bst.access.pre}
+{ ", accessed on " } % (default)
+
+% The string after access.
+FUNCTION {bst.access.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       DOI (digital object identifier)
+
+% This setting is valid only if there are "doi" field in bib files.
+
+% Show or Hide DOI.  If non-zero, DOI is displayed. Otherwise, DOI is suppressed. 
+FUNCTION {bst.show.doi}
+{ #1 }    % non-#0 -> Show DOI field (default)
+% { #0 }    % #0 -> Not show DOI field.
+
+% The string before DOI:
+%
+FUNCTION {bst.doi.pre}
+{ ", \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * } % (default)
+
+% The string after DOI:
+%
+FUNCTION {bst.doi.post}
+{ "}}" }	   % (default)
+
+% How to show URL and DOI fields when both fields exist.
+%
+% #0 -> Both fields are displayed
+% #1 -> Only URL field is displayed
+% #2 -> Only DOI field is displayed
+%
+FUNCTION {bst.url.doi}
+% { #0 }    % -> Both fields are displayed
+% { #1 }    % -> Only URL field is displayed
+{ #2 }    % (default) --> Only DOI field is displayed 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Other functions:
+
+% The string before note.
+FUNCTION {bst.note.pre}
+{ ", " }    % (default)
+
+% The string after note.
+FUNCTION {bst.note.post}
+{ "" }    % (default)
+
+% The string that represents Technical report:
+%
+FUNCTION {bst.techrep}
+{ "Technical Report" }    % (default)
+
+% The string that represents master thesis:
+%
+FUNCTION {bst.mthesis}
+{ " Master's thesis" }    % (default)
+
+% The string that represents phd thesis:
+%
+FUNCTION {bst.phdthesis}
+{ " Ph.D. dissertation" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization end here:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FUNCTION {bst.first}
+{ "1st" }
+
+FUNCTION {bst.second}
+{ "2nd" }
+
+FUNCTION {bst.third}
+{ "3rd" }
+
+FUNCTION {bst.fourth}
+{ "4th" }
+
+FUNCTION {bst.fifth}
+{ "5th" }
+
+FUNCTION {bst.st}
+{ "st" }
+
+FUNCTION {bst.nd}
+{ "nd" }
+
+FUNCTION {bst.rd}
+{ "rd" }
+
+FUNCTION {bst.th}
+{ "th" }
+
+%%%%% memo by Takeda
+
+% "a" 'b := indicates substituting string "a" for variable b.
+
+% Integer number #0, #1,...
+
+%%% Function definition:
+%
+% FUNCTION {name}
+% { 's :=
+%
+% }
+%
+% This is the definition of a function named "name".   The function "name" is
+% used in the following way 
+%
+% "foo" name
+% "foo" is an argument for the function "name".
+%
+% About the definition of a function with more than two arguments, see the
+% definition of "chop.word".
+
+%%% Declaration of variables:
+
+%% String global variables:
+STRINGS { s t tt }
+STRINGS { year.num }
+STRINGS { preone preten }
+STRINGS { last.sort.label next.extra prev.author prev.author.aer this.author }
+STRINGS { hang }
+STRINGS { item.type }
+STRINGS { tempa tempb }
+
+%% Integer global variables:
+INTEGERS { nameptr namesleft numnames name.num }
+INTEGERS { multiresult }
+INTEGERS { index }
+INTEGERS { len }
+INTEGERS { last.extra.num }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+INTEGERS { last.period.comma }
+INTEGERS { len1.aer len2.aer i.aer }
+
+%%% Definition of functions:
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+
+%%% Initialize variables:
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+
+%%% Remove comma and add period:
+%
+%%%
+FUNCTION {add.period.x}
+{ duplicate$
+  #-1 #1 substring$ "," =
+    { #-2 global.max$ substring$ "." * }
+    { duplicate$
+      #-1 #2 substring$ ". " =
+        { #-3 global.max$ substring$ "." * }
+        { duplicate$
+          #-1 #2 substring$ ", " =
+            { #-3 global.max$ substring$ "." * }
+            { duplicate$
+              #-1 #2 substring$ ",'" =
+                { #-3 global.max$ substring$ ".'" * }
+                { duplicate$
+                  #-1 #2 substring$ ".'" =
+                    { #-3 global.max$ substring$ ".'" * }
+                    { duplicate$
+                      #-1 #2 substring$ ".~" =
+                        { #-3 global.max$ substring$ ".~" * }
+                        { duplicate$
+                          #-1 #2 substring$ ",~" =
+                            { #-3 global.max$ substring$ ".~" * }
+                            { duplicate$
+                              #-1 #3 substring$ ",''" =
+                                { #-4 global.max$ substring$ ".''" * }
+                                { duplicate$
+                                  #-1 #3 substring$ ".''" =
+                                    { #-4 global.max$ substring$ ".''" * }
+                                    { add.period$ }
+                                  if$
+                                }
+                              if$
+                            }
+                          if$
+                        }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {output.nonnull}
+{ 's :=
+  % mid.sentence
+  output.state mid.sentence =
+    { ", " * write$ }
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period.x " " * write$ }
+          if$
+        }
+      if$
+      % not mid.sentence, set to mid.sentence
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+
+%%% If the last character is period or comma, set non-zero to
+%%% last.period.comma.
+FUNCTION {period.comma.p}
+{ duplicate$ 't :=
+  t #-1 #1 substring$ "." = 
+  t #-1 #1 substring$ "," = or
+  t #-1 #1 substring$ ":" = or 
+  t #-1 #2 substring$ ".'" = or
+  t #-1 #2 substring$ ",'" = or
+  t #-1 #3 substring$ ".''" = or
+  t #-1 #3 substring$ ",''" = or
+  t #-1 #2 substring$ ".~" = or
+  t #-1 #2 substring$ ",~" = or
+    { #1 'last.period.comma := }
+    { #0 'last.period.comma := }
+  if$
+}
+
+%%% remove unnecessary comma.
+FUNCTION {remove.pre.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #1 #1 substring$ "," = 
+       { s #2 global.max$ substring$ }
+       { s #1 #1 substring$ "." = 
+          { s #2 global.max$ substring$ }
+          's
+         if$
+       }
+      if$
+    }
+  if$
+}
+
+%%% output.nonnull.nocomma is the same as output.nonnull except that it does
+%%% not add commas even in mid.sentence.
+FUNCTION {output.nonnull.nocomma}
+{ 's :=
+  output.state mid.sentence =
+    % mid.sentence
+    { period.comma.p "" * write$ }
+
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  last.period.comma #0 =
+    { s }
+    { s remove.pre.comma }
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output}
+% { duplicate$ empty$
+%     'pop$
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.nocomma}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull.nocomma
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output.check}
+% { 't :=
+%   duplicate$ empty$
+%     { pop$ "empty " t * " in " * cite$ * warning$ }
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.check.nocomma}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull.nocomma
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Format in bbl file:
+
+% \harvarditem[Brezis et~al.]{Brezis, Krugman and
+%   Tsiddon}{1993}{brezis93:_leapf_inter_compet}
+% Brezis, Elise~S., Paul~R. Krugman, and Daniel Tsiddon  (1993) ``Leapfrogging in
+%   International Competition: A Theory of Cycles in National Technological
+%   Leadership.'', {\em American Economic Review.}, Vol.~83. No.~5. pp.
+%   1211--1219.
+
+% \harvarditem[abbreviated citation]{full citation}{year}{keyword} ...
+
+%%% Add period and newline.
+FUNCTION {fin.entry}
+{ add.period.x
+  write$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+
+FUNCTION {new.block.check}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+
+%%% booktitle
+FUNCTION {format.btitle}
+{ booktitle empty$
+    { "" }
+    { bst.btitle.pre booktitle * bst.btitle.post * }
+  if$
+}
+
+FUNCTION {journal.name.sub}
+{ 't :=
+  t #1 #4 substring$ "The " =
+    % Use #30 to handle with the long journal name.
+    { t #5 #30 substring$ 't := }
+    'skip$
+  if$
+  t
+}
+
+FUNCTION {format.journal.name.abb}
+{ journal 's :=
+  journal 'jname :=
+  s journal.name.sub 's :=
+  bst.journal.name.abb #0 =
+    'skip$
+    { 
+       s "Academic Management Review" =
+        { "Acad. Manage. J." 'jname := }
+        'skip$
+      if$
+      s "Academy of Management Journal" =
+        { "Acad. Manage. Rev." 'jname := }
+        'skip$
+      if$
+      s "Accounting Review" =
+        { "Account. Rev." 'jname := }
+        'skip$
+      if$
+      s "Accounting, Organizations and Society" =
+        { "Account. Org. Soc." 'jname := }
+        'skip$
+      if$
+      s "Accounting, Organizations and Society" =
+        { "Admin. Sci. Quart." 'jname := }
+        'skip$
+      if$
+      s "Administrative Science Quarterly" =
+        { "Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Applied Economics" =
+        { "Am. Econ. J. Appl. Econ." 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Economic Policy" =
+        { "Am. Econ. J. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Macroeconomics" =
+        { "Am. Econ. J. Macro." 'jname := }
+        'skip$
+      if$
+      s "American Economic Journal: Microeconomics" =
+        { "Am. Econ. J. Micro." 'jname := }
+        'skip$
+      if$
+      s "American Economic Review" =
+        { "Am. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "American Journal of Agricultural Economics" =
+        { "Am. J. Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "American Journal of Economics and Sociology" =
+        { "Am. J. Econ. Sociol." 'jname := }
+        'skip$
+      if$
+      s "Applied Economics" =
+        { "Appl. Econ." 'jname := }
+        'skip$
+      if$
+      s "Applied Economics Letters" =
+        { "Appl. Econ. Lett." 'jname := }
+        'skip$
+      if$
+      s "Applied Energy" =
+        { "Appl. Energ." 'jname := }
+        'skip$
+      if$
+      s "Applied Stochastic Models in Business and Industry" =
+        { "Appl. Stoch. Model Bus." 'jname := }
+        'skip$
+      if$
+      s "Auditing: A Journal of Practise and Theory" =
+        { "Auditing.-J. Pract. Th." 'jname := }
+        'skip$
+      if$
+      s "Australian Journal of Agricultural and Resource Economics" =
+        { "Aust. J. Agr. Resour. Ec." 'jname := }
+        'skip$
+      if$
+      s "B.E. Journal of Economic Analysis \& Policy" =
+        { "B.E. J. Econ. Anal. Policy" 'jname := }
+        'skip$
+      if$
+      s "Betriebswirtschaftliche Forschung Und Praxis" =
+        { "Betrieb. Forsch. Prax." 'jname := }
+        'skip$
+      if$
+      s "British Journal of Industrial Relations" =
+        { "Brit. J. Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "British Journal of Management" =
+        { "Brit. J. Manage." 'jname := }
+        'skip$
+      if$
+      s "Bulletin of Indonesian Economic Studies" =
+        { "B. Indones. Econ. Stud." 'jname := }
+        'skip$
+      if$
+      s "Business Ethics Quarterly" =
+        { "Bus. Ethics Q." 'jname := }
+        'skip$
+      if$
+      s "Business History" =
+        { "Bus. Hist." 'jname := }
+        'skip$
+      if$
+      s "Business History Review" =
+        { "Bus. Hist. Rev." 'jname := }
+        'skip$
+      if$
+      s "Business Lawyer" =
+        { "Bus. Lawyer" 'jname := }
+        'skip$
+      if$
+      s "California Management Review" =
+        { "Calif. Manage. Rev." 'jname := }
+        'skip$
+      if$
+      s "Cambridge Journal of Economics" =
+        { "Cambridge J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Canadian Journal of Administrative Sciences" =
+        { "Can. J. Adm. Sci." 'jname := }
+        'skip$
+      if$
+      s "Canadian Journal of Economics" =
+        { "Can. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "China Economic Review" =
+        { "China. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "Climate Change Economics" =
+        { "Clim. Change Econ." 'jname := }
+        'skip$
+      if$
+      s "Climate Policy" =
+        { "Clim. Policy" 'jname := }
+        'skip$
+      if$
+      s "Communications in Statistics – Part A: Theory and Methods" =
+        { "Commun. Stat.-Theor. M." 'jname := }
+        'skip$
+      if$
+      s "Computational Economics" =
+        { "Computation. Econ." 'jname := }
+        'skip$
+      if$
+      s "Computational Statistics" =
+        { "Computation. Stat." 'jname := }
+        'skip$
+      if$
+      s "Computational Statistics and Data Analysis" =
+        { "Comput. Stat. Data An." 'jname := }
+        'skip$
+      if$
+      s "Contemporary Accounting Research" =
+        { "Contemp. Account. Res." 'jname := }
+        'skip$
+      if$
+      s "Contemporary Economic Policy" =
+        { "Contemp. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Defence and Peace Economics" =
+        { "Defence Peace Econ." 'jname := }
+        'skip$
+      if$
+      s "Development Economics" =
+        { "Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Eastern European Economics" =
+        { "Eastern Eur. Econ." 'jname := }
+        'skip$
+      if$
+      s "Ecological Economics" =
+        { "Ecol. Econ." 'jname := }
+        'skip$
+      if$
+      s "Econometric Theory" =
+        { "Economet. Theor." 'jname := }
+        'skip$
+      if$
+      s "Econometrica" =
+        { "Econometrica" 'jname := }
+        'skip$
+      if$
+      s "Economic and Industrial Democracy" =
+        { "Econ. Ind. Democr." 'jname := }
+        'skip$
+      if$
+      s "Economic Development and Cultural Change" =
+        { "Econ. Dev. Cult. Change" 'jname := }
+        'skip$
+      if$
+      s "Economic Development and Cultural Change" =
+        { "Economist.-Netherland" 'jname := }
+        'skip$
+      if$
+      s "Economic Development Quarterly" =
+        { "Econ. Dev. Q." 'jname := }
+        'skip$
+      if$
+      s "Economic Geography" =
+        { "Econ. Geogr." 'jname := }
+        'skip$
+      if$
+      s "Economic History Review" =
+        { "Econ. Hist. Rev." 'jname := }
+        'skip$
+      if$
+      s "Economic Inquiry" =
+        { "Econ. Inq." 'jname := }
+        'skip$
+      if$
+      s "Economic Journal" =
+        { "Econ. J." 'jname := }
+        'skip$
+      if$
+      s "Economic Modelling" =
+        { "Econ. Model." 'jname := }
+        'skip$
+      if$
+      s "Economic Policy" =
+        { "Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Economic Record" =
+        { "Econ. Rec." 'jname := }
+        'skip$
+      if$
+      s "Economic Theory" =
+        { "Econ. Theor." 'jname := }
+        'skip$
+      if$
+      s "Economica" =
+        { "Economica" 'jname := }
+        'skip$
+      if$
+      s "Economics and Philosophy" =
+        { "Econ. Philos." 'jname := }
+        'skip$
+      if$
+      s "Economics Letters" =
+        { "Econ. Lett." 'jname := }
+        'skip$
+      if$
+      s "Economics of Education Review" =
+        { "Econ. Educ. Rev." 'jname := }
+        'skip$
+      if$
+      s "Economics of Energy \& Environmental Policy" =
+        { "Econ. Energ. Environ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Economics of Transition" =
+        { "Econ. Transit." 'jname := }
+        'skip$
+      if$
+      s "Economy and Society" =
+        { "Econ. Soc." 'jname := }
+        'skip$
+      if$
+      s "Ekonomicky Casopis" =
+        { "Ekon. Cas." 'jname := }
+        'skip$
+      if$
+      s "Ekonomiska Samfundets Tidskrift" =
+        { "Ekon. Samf. Tidskr." 'jname := }
+        'skip$
+      if$
+      s "Emerging Markets Finance and Trade" =
+        { "Emerg. Mark. Financ. Tr." 'jname := }
+        'skip$
+      if$
+      s "Energy Economics" =
+        { "Energ. Econ." 'jname := }
+        'skip$
+      if$
+      s "Energy Journal" =
+        { "Energ. J." 'jname := }
+        'skip$
+      if$
+      s "Energy Policy" =
+        { "Energ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Entrepreneurship \& Regional Development" =
+        { "Entrep. Region. Dev." 'jname := }
+        'skip$
+      if$
+      s "Entrepreneurship Theory and Practice" =
+        { "Entrep. Theory Pract." 'jname := }
+        'skip$
+      if$
+      s "Environment and Development Economics" =
+        { "Environ. Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Environmental and Resource Economics" =
+        { "Environ. Resour. Econ." 'jname := }
+        'skip$
+      if$
+      s "Environmental Economics and Policy Studies" =
+        { "Environ. Econ. Policy Stud." 'jname := }
+        'skip$
+      if$
+      s "Environmental Science and Policy" =
+        { "Environ. Sci. Policy" 'jname := }
+        'skip$
+      if$
+      s "Environmental Science \& Technology" =
+        { "Environ. Sci. Technol." 'jname := }
+        'skip$
+      if$
+      s "Eurasian Geography and Economics " =
+        { "Eurasian Geogr. Econ." 'jname := }
+        'skip$
+      if$
+      s "European Economic Review" =
+        { "Eur. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "European Journal of Industrial Relations" =
+        { "Eur. J. Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "European Review of Agricultural Economics" =
+        { "Eur. Rev. Agric. Econ." 'jname := }
+        'skip$
+      if$
+      s "Europe-Asia Studies" =
+        { "Europe-Asia Stud." 'jname := }
+        'skip$
+      if$
+      s "Explorations in Economic History" =
+        { "Explor. Econ. Hist." 'jname := }
+        'skip$
+      if$
+      s "Feminist Economics" =
+        { "Fem. Econ." 'jname := }
+        'skip$
+      if$
+      s "Finance a Uver" =
+        { "Financ. Uver." 'jname := }
+        'skip$
+      if$
+      s "Finance and Stochastics" =
+        { "Financ. Stoch." 'jname := }
+        'skip$
+      if$
+      s "Financial Analysts Journal" =
+        { "Financ. Anal. J." 'jname := }
+        'skip$
+      if$
+      s "Financial Management" =
+        { "Financ. Manage." 'jname := }
+        'skip$
+      if$
+      s "Fiscal Studies" =
+        { "Fisc. Stud." 'jname := }
+        'skip$
+      if$
+      s "Food Policy" =
+        { "Food. Policy." 'jname := }
+        'skip$
+      if$
+      s "Futures" =
+        { "Futures" 'jname := }
+        'skip$
+      if$
+      s "Games and Economic Behavior" =
+        { "Game Econ. Behav." 'jname := }
+        'skip$
+      if$
+      s "Health Economics" =
+        { "Health Econ." 'jname := }
+        'skip$
+      if$
+      s "Hitotsubashi Journal of Economics" =
+        { "Hitotsub. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "IMF Staff Papers" =
+        { "Imf. Staff. Papers" 'jname := }
+        'skip$
+      if$
+      s "Industrial and Corporate Change" =
+        { "Ind. Corp. Change" 'jname := }
+        'skip$
+      if$
+      s "Industrial and Labor Relations Review" =
+        { "Ind. Labor. Relat. Rev." 'jname := }
+        'skip$
+      if$
+      s "Industrial Marketing Management" =
+        { "Ind. Market Manag." 'jname := }
+        'skip$
+      if$
+      s "Industrial Relations" =
+        { "Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "Information Economics and Policy" =
+        { "Info. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Insurance: Mathematics and Economics" =
+        { "Insur. Math. Econ." 'jname := }
+        'skip$
+      if$
+      s "International Economic Review" =
+        { "Int. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Electronics and Telecommunications" =
+        { "Int. J. Electron. Comm." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Economic Theory" =
+        { "Int. J. Econ. Theory" 'jname := }
+        'skip$
+      if$
+      s "International Journal of Finance \& Economics" =
+        { "Int. J. Financ. Econ." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Forecasting" =
+        { "Int. J. Forecast." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Game Theory" =
+        { "Int. J. Game. Theory" 'jname := }
+        'skip$
+      if$
+      s "International Journal of Industrial Organization" =
+        { "Int. J. Ind. Organ." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Manpower" =
+        { "Int. J. Manpow." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Market Research" =
+        { "Int. J. Market Res." 'jname := }
+        'skip$
+      if$
+      s "International Journal of Research in Marketing" =
+        { "Int. J. Res. Mark." 'jname := }
+        'skip$
+      if$
+      s "International Labour Review" =
+        { "Int. Labour Rev." 'jname := }
+        'skip$
+      if$
+      s "International Marketing Review" =
+        { "Int. Market. Rev." 'jname := }
+        'skip$
+      if$
+      s "International Review of Applied Economics" =
+        { "Int. Rev. Appl. Econ." 'jname := }
+        'skip$
+      if$
+      s "International Review of Law and Economics" =
+        { "Int. Rev. Law Econ." 'jname := }
+        'skip$
+      if$
+      s "International Small Business Journal" =
+        { "Int. Small. Bus. J." 'jname := }
+        'skip$
+      if$
+      s "International Tax and Public Finance" =
+        { "Int. Tax Public Finan." 'jname := }
+        'skip$
+      if$
+      s "Jahrbücher für Nationalökonomie und Statistik" =
+        { "Jahrb. Natl. Stat." 'jname := }
+        'skip$
+      if$
+      s "Japan and the World Economy" =
+        { "Jpn. World Econ." 'jname := }
+        'skip$
+      if$
+      s "Japanese Economic Review" =
+        { "Jpn. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "JCMS-journal of Common Market Studies" =
+        { "Jcms.-J. Common. Mark. S." 'jname := }
+        'skip$
+      if$
+      s "Journal of Accounting and Economics" =
+        { "J. Account. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Accounting Research" =
+        { "J. Account. Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Advertising" =
+        { "J. Advertising" 'jname := }
+        'skip$
+      if$
+      s "Journal of Advertising Research" =
+        { "J. Advertising Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of African Economies" =
+        { "J. Afr. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Agricultural and Resource Economics" =
+        { "J. Agr. Resour. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Agricultural Economics" =
+        { "J. Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Applied Econometrics" =
+        { "J. Appl. Econom." 'jname := }
+        'skip$
+      if$
+      s "Journal of Banking and Finance" =
+        { "J. Bank Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business" =
+        { "J. Bus." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business and Economic Statistics" =
+        { "J. Bus. Econ. Stat." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business and Psychology" =
+        { "J. Bus. Psychol." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business and Technical Communication" =
+        { "J. Bus. Tech. Commun." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business Ethics" =
+        { "J. Bus. Ethics" 'jname := }
+        'skip$
+      if$
+      s "Journal of Business Research" =
+        { "J. Bus. Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Business Venturing" =
+        { "J. Bus. Venturing." 'jname := }
+        'skip$
+      if$
+      s "Journal of Cleaner Productiond" =
+        { "J. Clean. Prod." 'jname := }
+        'skip$
+      if$
+      s "Journal of Comparative Economics" =
+        { "J. Comp. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Consumer Affairs" =
+        { "J. Consum. Aff." 'jname := }
+        'skip$
+      if$
+      s "Journal of Consumer Research" =
+        { "J. Consum. Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Corporate Finance" =
+        { "J. Corp. Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Development Economics" =
+        { "J. Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Econometrics" =
+        { "J. Econometrics" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Behavior and Organization" =
+        { "J. Econ. Behav. Organ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Dynamics and Control" =
+        { "J. Econ. Dyn. Control" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Education" =
+        { "J. Econ. Educ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Geography" =
+        { "J. Econ. Geogr." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Growth" =
+        { "J. Econ. Growth" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic History" =
+        { "J. Econ. Hist." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Integration" =
+        { "J. Econ. Integr." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Issues" =
+        { "J. Econ. Issues." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Perspectives" =
+        { "J. Econ. Perspect." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Psychology" =
+        { "J. Econ. Psychol." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Literature" =
+        { "J. Econ. Lit." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Surveys" =
+        { "J. Econ. Surv." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economic Theory" =
+        { "J. Econ. Theory" 'jname := }
+        'skip$
+      if$
+      s "Journal of Economics" =
+        { "J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Economics and Management Strategy" =
+        { "J. Econ. Manage. Strat." 'jname := }
+        'skip$
+      if$
+      s "Journal of Environmental Economics and Management" =
+        { "J. Environ. Econ. Manag." 'jname := }
+        'skip$
+      if$
+      s "Journal of Evolutionary Economics" =
+        { "J. Evol. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Finance" =
+        { "J. Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial and Quantitative Analysis" =
+        { "J. Financ. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial Economics" =
+        { "J. Financ. Intermed." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial Intermediation" =
+        { "J. Financ. Mark." 'jname := }
+        'skip$
+      if$
+      s "Journal of Financial Markets" =
+        { "J. Financ. Quant. Anal." 'jname := }
+        'skip$
+      if$
+      s "Journal of Forecasting" =
+        { "J. Forecasting." 'jname := }
+        'skip$
+      if$
+      s "Journal of Futures Markets" =
+        { "J. Futures Market" 'jname := }
+        'skip$
+      if$
+      s "Journal of Health Economics" =
+        { "J. Health Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Housing Economics" =
+        { "J. Hous. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Human Resources" =
+        { "J. Hum. Resour." 'jname := }
+        'skip$
+      if$
+      s "Journal of Industrial Economics" =
+        { "J. Ind. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Institutional and Theoretical Economics" =
+        { "J. Inst. Theor. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Integrated Disaster Risk Management" =
+        { "J. Integr. Disaster Risk Manag." 'jname := }
+        'skip$
+      if$
+      s "Journal of International Business Studies" =
+        { "J. Int. Bus. Stud." 'jname := }
+        'skip$
+      if$
+      s "Journal of International Economics" =
+        { "J. Int. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of International Marketing" =
+        { "J. Int. Marketing" 'jname := }
+        'skip$
+      if$
+      s "Journal of International Money and Finance" =
+        { "J. Int. Money Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Labor Economics" =
+        { "J. Labor Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Labor Research" =
+        { "J. Labor Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Law and Economics" =
+        { "J. Law. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Law, Economics, and Organization" =
+        { "J. Law. Econ. Organ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Macroeconomics" =
+        { "J. Macroecon." 'jname := }
+        'skip$
+      if$
+      s "Journal of Management" =
+        { "J. Manage." 'jname := }
+        'skip$
+      if$
+      s "Journal of Management Studies" =
+        { "J. Manage. Stud." 'jname := }
+        'skip$
+      if$
+      s "Journal of Marketing" =
+        { "J. Marketing" 'jname := }
+        'skip$
+      if$
+      s "Journal of Marketing Research" =
+        { "J. Marketing Res." 'jname := }
+        'skip$
+      if$
+      s "Journal of Mathematical Economics" =
+        { "J. Math. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Media Economics" =
+        { "J. Media Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Monetary Economics" =
+        { "J. Monetary. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Money, Credit and Banking" =
+        { "J. Money Credit Bank." 'jname := }
+        'skip$
+      if$
+      s "Journal of Policy Modeling" =
+        { "J. Policy Model." 'jname := }
+        'skip$
+      if$
+      s "Journal of Political Economy" =
+        { "J. Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Population Economics" =
+        { "J. Popul. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Portfolio Management" =
+        { "J. Portfolio Manage." 'jname := }
+        'skip$
+      if$
+      s "Journal of Post Keynesian Economics" =
+        { "J. Post Keynesian Ec." 'jname := }
+        'skip$
+      if$
+      s "Journal of Product Innovation Management" =
+        { "J. Prod. Innovat. Manag." 'jname := }
+        'skip$
+      if$
+      s "Journal of Productivity Analysis" =
+        { "J. Prod. Anal." 'jname := }
+        'skip$
+      if$
+      s "Journal of Public Economics" =
+        { "J. Public Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Public Policy and Marketing" =
+        { "J. Public Policy Mark." 'jname := }
+        'skip$
+      if$
+      s "Journal of Real Estate Finance and Economics" =
+        { "J. Real Estate Financ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Regulatory Economics" =
+        { "J. Regul. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Retailing" =
+        { "J. Retailing" 'jname := }
+        'skip$
+      if$
+      s "Journal of Risk and Insurance" =
+        { "J. Risk. Insur" 'jname := }
+        'skip$
+      if$
+      s "Journal of Risk and Uncertainty" =
+        { "J. Risk Uncertainty" 'jname := }
+        'skip$
+      if$
+      s "Journal of Statistical Computation and Simulation" =
+        { "J. Stat. Comput. Sim." 'jname := }
+        'skip$
+      if$
+      s "Journal of Statistical Planning and Inference" =
+        { "J. Stat. Plan. Infer." 'jname := }
+        'skip$
+      if$
+      s "Journal of the Academy of Marketing Science" =
+        { "J. Acad. Market. Sci." 'jname := }
+        'skip$
+      if$
+      s "Journal of the American Statistical Association" =
+        { "J. Am. Stat. Assoc." 'jname := }
+        'skip$
+      if$
+      s "Journal of the European Economic Association" =
+        { "J. Eur. Econ. Assoc." 'jname := }
+        'skip$
+      if$
+      s "Journal of the Japanese and International Economies" =
+        { "J. Jpn. Int. Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of Time Series Analysis" =
+        { "J. Time Ser. Anal." 'jname := }
+        'skip$
+      if$
+      s "Journal of Transport Economics and Policy" =
+        { "J. Transp. Econ. Policy" 'jname := }
+        'skip$
+      if$
+      s "Journal of Urban Economics" =
+        { "J. Urban Econ." 'jname := }
+        'skip$
+      if$
+      s "Journal of World Business" =
+        { "J. World. Bus." 'jname := }
+        'skip$
+      if$
+      s "Kyklos" =
+        { "Kyklos" 'jname := }
+        'skip$
+      if$
+      s "Labor History" =
+        { "Labor Hist." 'jname := }
+        'skip$
+      if$
+      s "Labour Economics" =
+        { "Labour Econ." 'jname := }
+        'skip$
+      if$
+      s "Land Economics" =
+        { "Land Econ." 'jname := }
+        'skip$
+      if$
+      s "Long Range Planning" =
+        { "Long Range Plann." 'jname := }
+        'skip$
+      if$
+      s "Macroeconomic Dynamics" =
+        { "Macroecon. Dyn." 'jname := }
+        'skip$
+      if$
+      s "Management Science" =
+        { "Manage. Sci." 'jname := }
+        'skip$
+      if$
+      s "Manchester School" =
+        { "Manch. Sch." 'jname := }
+        'skip$
+      if$
+      s "Marketing Letters" =
+        { "Market. Lett." 'jname := }
+        'skip$
+      if$
+      s "Marketing Science" =
+        { "Market. Sci." 'jname := }
+        'skip$
+      if$
+      s "Materials Transactions" =
+        { "Mater. Trans." 'jname := }
+        'skip$
+      if$
+      s "Mathematical Finance" =
+        { "Math. Financ." 'jname := }
+        'skip$
+      if$
+      s "Monthly Labor Review" =
+        { "Mon. Labor Rev." 'jname := }
+        'skip$
+      if$
+      s "National Tax Journal" =
+        { "Natl. Tax. J." 'jname := }
+        'skip$
+      if$
+      s "New England Economic Review" =
+        { "New Engl. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "New Political Economy" =
+        { "New Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Open Economies Review" =
+        { "Open. Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "Organizational Dynamics" =
+        { "Organ. Dyn." 'jname := }
+        'skip$
+      if$
+      s "Oxford Bulletin of Economics and Statistics" =
+        { "Oxford. B. Econ. Stat." 'jname := }
+        'skip$
+      if$
+      s "Oxford Economic Papers" =
+        { "Oxford Econ. Pap." 'jname := }
+        'skip$
+      if$
+      s "Oxford Review of Economic Policy" =
+        { "Oxford. Rev. Econ. Pol." 'jname := }
+        'skip$
+      if$
+      s "Politicka Ekonomie" =
+        { "Polit. Ekon." 'jname := }
+        'skip$
+      if$
+      s "Population and Development Review" =
+        { "Popul. Dev. Rev." 'jname := }
+        'skip$
+      if$
+      s "Post-Communist Economies" =
+        { "Post.-Communist. Econ." 'jname := }
+        'skip$
+      if$
+      s "Post-Soviet Affairs" =
+        { "Post.-Sov. Aff." 'jname := }
+        'skip$
+      if$
+      s "Psychology \& Marketing" =
+        { "Psychol. Market." 'jname := }
+        'skip$
+      if$
+      s "Public Choice" =
+        { "Public. Choice." 'jname := }
+        'skip$
+      if$
+      s "Quantitative Finance" =
+        { "Quant. Financ." 'jname := }
+        'skip$
+      if$
+      s "Quarterly Journal of Economics" =
+        { "Q. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "R\&D Management" =
+        { "R.\&D. Manage." 'jname := }
+        'skip$
+      if$
+      s "RAND Journal of Economics" =
+        { "Rand. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Real Estate Economics" =
+        { "Real Estate Econ." 'jname := }
+        'skip$
+      if$
+      s "Regional Science and Urban Economics" =
+        { "Reg. Sci. Urban. Econ." 'jname := }
+        'skip$
+      if$
+      s "Regional Studies" =
+        { "Reg. Stud." 'jname := }
+        'skip$
+      if$
+      s "Relations Industrielles-Industrial Relations" =
+        { "Relat. Ind.-Ind. Relat." 'jname := }
+        'skip$
+      if$
+      s "Research-Technology Management" =
+        { "Res. Technol. Manage." 'jname := }
+        'skip$
+      if$
+      s "Resource and Energy Economics" =
+        { "Resour. Energy. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of Accounting Studies" =
+        { "Rev. Acc. Stud." 'jname := }
+        'skip$
+      if$
+      s "Review of Agricultural Economics" =
+        { "Rev. Agr. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of Development Economics" =
+        { "Rev. Dev. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of Economic Dynamics" =
+        { "Rev. Econ. Dynam." 'jname := }
+        'skip$
+      if$
+      s "Review of Economic Studies" =
+        { "Rev. Econ. Stat." 'jname := }
+        'skip$
+      if$
+      s "Review of Economics and Statistics" =
+        { "Rev. Econ. Stud." 'jname := }
+        'skip$
+      if$
+      s "Review of Financial Studies" =
+        { "Rev. Financ. Stud." 'jname := }
+        'skip$
+      if$
+      s "Review of Income and Wealth" =
+        { "Rev. Income Wealth" 'jname := }
+        'skip$
+      if$
+      s "Review of Industrial Organization" =
+        { "Rev. Ind. Organ." 'jname := }
+        'skip$
+      if$
+      s "Review of International Economics" =
+        { "Rev. Int. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of International Political Economy" =
+        { "Rev. Int. Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Review of World Economics" =
+        { "Rev. World Econ." 'jname := }
+        'skip$
+      if$
+      s "Scandinavian Journal of Economics" =
+        { "Scand. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Scottish Journal of Political Economy" =
+        { "Scot. J. Polit. Econ." 'jname := }
+        'skip$
+      if$
+      s "Small Business Economics" =
+        { "Small. Bus. Econ." 'jname := }
+        'skip$
+      if$
+      s "Social Choice and Welfare" =
+        { "Soc. Choice Welfare" 'jname := }
+        'skip$
+      if$
+      s "South African Journal of Economics" =
+        { "S. Afr. J. Econ." 'jname := }
+        'skip$
+      if$
+      s "Southern Economic Journal" =
+        { "South. Econ. J." 'jname := }
+        'skip$
+      if$
+      s "Strategic Management Journal" =
+        { "Statistics." 'jname := }
+        'skip$
+      if$
+      s "Strategic Management Journal" =
+        { "Strategic Manage. J." 'jname := }
+        'skip$
+      if$
+      s "Studies in Nonlinear Dynamics and Econometrics" =
+        { "Stoch. Anal. Appl." 'jname := }
+        'skip$
+      if$
+      s "Studies in Nonlinear Dynamics and Econometrics" =
+        { "Stud. Nonlinear. Dyn. E." 'jname := }
+        'skip$
+      if$
+      s "Supply Chain Management" =
+        { "Supply. Chain. Manag." 'jname := }
+        'skip$
+      if$
+      s "Sustainability" =
+        { "Sustainability" 'jname := }
+        'skip$
+      if$
+      s "Technological Forecasting and Social Change" =
+        { "Technol. Forecast. Soc." 'jname := }
+        'skip$
+      if$
+      s "Theory and Decision" =
+        { "Theor. Decis." 'jname := }
+        'skip$
+      if$
+      s "Tijdschrift voor Economische en Sociale Geografie" =
+        { "Tijdschr. Econ. Soc. Ge." 'jname := }
+        'skip$
+      if$
+      s "Trimestre Economico" =
+        { "Trimest. Econ." 'jname := }
+        'skip$
+      if$
+      s "Work and Occupations" =
+        { "Work Occupation." 'jname := }
+        'skip$
+      if$
+      s "Work, Employment and Society" =
+        { "Work Employ. Soc." 'jname := }
+        'skip$
+      if$
+      s "World Bank Economic Review" =
+        { "World Bank Econ. Rev." 'jname := }
+        'skip$
+      if$
+      s "World Bank Research Observer" =
+        { "World Bank Res. Obser." 'jname := }
+        'skip$
+      if$
+      s "World Development" =
+        { "World Dev." 'jname := }
+        'skip$
+      if$
+      s "World Economy" =
+        { "World Econ." 'jname := }
+        'skip$
+      if$
+    }
+  if$
+  jname
+}
+
+%%% journal
+FUNCTION {format.journal}
+{ journal empty$
+    { "" }
+    { bst.journal.pre format.journal.name.abb * bst.journal.post * }
+  if$
+}
+
+%%% title for book
+FUNCTION {format.book}
+{ title empty$
+    { "" }
+    { bst.book.pre title * bst.book.post * }
+  if$
+}
+
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+    { type$ "online" = bst.show.url or
+        { bst.url.pre url * bst.url.post *
+          access empty$
+             { "" * }
+             { bst.access.pre * access * bst.access.post * }
+          if$
+        }
+        { "" }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.doi}
+{ doi empty$ bst.show.doi not or
+    { "" }
+    { bst.doi.pre doi * bst.doi.post * }
+  if$
+}
+
+FUNCTION {format.url.doi}
+{ url empty$
+    { format.doi }
+    { doi empty$
+        { format.url }
+        { bst.url.doi #0 =
+            { format.url output.nocomma
+              format.doi }
+            { bst.url.doi #1 =
+                { format.url } 
+                { format.doi }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% and others
+FUNCTION {bst.and.others.output}
+{ nameorder.temp "random" =
+  bst.use.nameorder #0 = not and
+    { bst.and.others.nameorder }
+    { bst.and.others }
+  if$
+}
+
+%%% author and editor
+
+%%% name
+FUNCTION {format.names}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+
+  { nameptr #1 =
+      % First author
+      { bst.author.name #0 =
+        bst.author.name #1 =
+        or
+           { bst.first.name.initial #0 = 
+            { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+            { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+           if$
+         }
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+           if$
+         }
+        if$
+      }
+      % The second or later authors
+      { bst.author.name #0 =
+        bst.author.name #2 =
+        or
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+             if$
+           }
+           { bst.first.name.initial #0 = 
+                { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+                { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+             if$
+           }
+        if$
+      }
+    if$
+    
+    nameptr #1 >
+      % The second or later authors
+      { numnames bst.max.author.num >
+          { bst.and.others * 
+            #1 'namesleft :=  }
+          { nameorder.temp "random" =
+            bst.use.nameorder #0 = not and
+              { bst.and.nameorder * t * }
+              { namesleft #1 >
+                  % More than one authors left
+                  { ", " * t * }
+                  % Only one author left
+                  { t "others" =
+                      { bst.and.others.output * }
+                      { numnames #2 =
+                          % Entry with two authors
+                          { bst.and * t * }
+                          { bst.ands * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% For JPE, we define `format.name.ed` in addition to `format.name`.
+FUNCTION {format.names.ed}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+  {  nameptr #1 =
+     % First author
+     { bst.first.name.initial #0 = 
+         { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+         { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+       if$
+     }
+     % The second or later authors
+     { bst.first.name.initial #0 = 
+         { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+         { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+       if$
+     }
+    if$
+
+    nameptr #1 >
+      % The second or later authors
+      { nameorder.temp "random" =
+        bst.use.nameorder #0 = not and
+          { bst.and.nameorder * t * }
+          { namesleft #1 >
+              % More than one authors left
+              { ", " * t * }
+              % Only one author left
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 =
+                      % Entry with two authors
+                      { bst.and * t * }
+                      { bst.ands * t * }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% remove successive periods (commas) from author
+FUNCTION {remove.ss.period.auth}
+{ 's :=
+  s format.names 'tempa :=
+  bst.author.post 'tempb :=
+  tempb #1 #1 substring$ "}" =
+    { tempa tempb * }
+    { tempa #-1 #1 substring$ tempb #1 #1 substring$ = 
+        { tempa tempb #2 global.max$ substring$ * }
+        { tempa tempb * }
+      if$
+    }
+  if$
+}
+
+% <prev name list> <new name list> compare.names <modified name list>
+FUNCTION {compare.names.aer}
+{ 's :=
+  'tempa :=
+
+%   "current.author = " s * "\\" * write$ newline$
+%   "prev.author = " tempa * "\\" * write$ newline$
+
+  tempa num.names$ 'len1.aer :=  % len1 = the number of previous authors
+  s num.names$ 'len2.aer :=         % len2 = the number of current authors
+
+% len1.aer := min(len1.aer,len2.aer)
+% len1 -> min{ the number of previous authors, the number of current authors }
+  len1.aer len2.aer >
+    { len2.aer 'len1.aer := }
+    { }
+  if$
+
+% start with an empty string, then while the components are the same
+% add "\bysame"
+  ""
+  #1 'i.aer :=
+
+  { i.aer len1.aer > not }
+    { tempa i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      =
+        { #1 i.aer <
+            { " and " * }       % \bysame で省略する著者の前につく and 
+            { }
+          if$
+          "\bysame{}" *
+          i.aer #1 + 'i.aer := } 
+        { #-1 'len1.aer := }
+      if$
+    }
+  while$
+
+% add the rest of the second string
+  { i.aer len2.aer > not }
+    { #1 i.aer <
+        { " and " * }
+        { }
+      if$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$ *
+      i.aer #1 + 'i.aer :=
+    }
+  while$
+}
+
+%%% author
+FUNCTION {format.authors}
+{ author empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer author compare.names.aer 's :=
+          author 'prev.author.aer := }
+        { author 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors}
+{ editor empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer editor compare.names.aer 's :=
+          editor 'prev.author.aer := }
+        { editor 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+      s num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.authors.alt}
+{ author empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        {"\bysame "}
+        { bst.author.pre author remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors.alt}
+{ editor empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre editor remove.ss.period.auth * }
+      if$
+      editor num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+%%% format.in.ed.booktitle
+FUNCTION {format.editors.x}
+{ editor empty$
+    { "" }
+    { bst.editor.btitle.order #0 =
+        { "" }
+        { editor num.names$ #1 >
+           { " edited by " }
+           { " edited by " }
+%            { bst.editors " by " * }
+%            { bst.editor  " by " * }
+          if$
+        }
+      if$
+      editor format.names.ed *
+      bst.editor.btitle.order #0 =
+        { editor num.names$ #1 >
+           { bst.editors * }
+           { bst.editor * }
+          if$
+        }
+        { "" * }
+      if$
+    }
+  if$
+}
+
+%%% Remove commas in the cases like "?." and "?,".
+FUNCTION {remove.irrelevant.period.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #-1 #3 substring$ "?,'" =
+      s #-1 #3 substring$ "?.'" = or
+        { s #-3 global.max$ substring$ "'" * }
+        { s #-1 #4 substring$ "?,''" =
+          s #-1 #4 substring$ "?.''" = or
+            { s #-4 global.max$ substring$ "''" * }
+            { s #-1 #2 substring$ "?," =
+              s #-1 #2 substring$ "?." = or
+                { s #-2 global.max$ substring$ "" * }
+                { s #-1 #3 substring$ "?,~" =
+                  s #-1 #3 substring$ "?.~" = or
+                    { s #-4 global.max$ substring$ "?~" * }
+                    's
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% title
+FUNCTION {format.title.sub}
+{ bst.title.lower.case #0 =
+     { bst.title.pre title * bst.title.post * }
+     { bst.title.pre title "t" change.case$ * bst.title.post * }
+  if$
+}
+
+%%% title
+FUNCTION {format.title}
+{ title empty$
+  bst.hide.title #0 = not or
+    { "" }
+    { format.title.sub remove.irrelevant.period.comma }
+  if$
+}
+
+%%% title for misc.
+FUNCTION {format.misc.title}
+{ title empty$
+    { "" }
+    { bst.title.pre title * bst.title.post * }
+  if$
+}
+
+% Convert "-" to "--" (for pages field)
+FUNCTION {n.dashify}
+{ 't :=
+  ""
+  %% while$
+  { t empty$ not }
+  { t #1 #1 substring$ "-" =
+      { t #1 #2 substring$ "--" = not
+          { "--" *
+            t #2 global.max$ substring$ 't :=
+          }
+          { { t #1 #1 substring$ "-" = }
+            { "-" *
+              t #2 global.max$ substring$ 't :=
+            }
+            while$
+          }
+        if$
+      }
+      { t #1 #1 substring$ *
+       t #2 global.max$ substring$ 't :=
+      }
+    if$
+  }
+  while$
+}
+
+%%% year
+FUNCTION {format.year}
+{ year empty$
+    { "there's no year in " cite$ * warning$
+      ", " }
+    { type$ "article" =
+        { bst.year.pre year * extra.label * bst.year.post * }
+        { bst.year.na.pre year * extra.label * bst.year.na.post * }
+      if$
+    }
+  if$
+}
+
+%%% page for book
+FUNCTION {format.book.pages}
+{ pages empty$
+    { "" }
+    { bst.pages.pre pages * bst.pages.post * }
+  if$
+}
+
+%%% Attach tie for the string with two or less characters.
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+    { "~" }
+    { " " }
+  if$
+  swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+
+%%% volume for book
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+    { bst.volume.pre volume * bst.volume.post *
+      series empty$
+        'skip$
+        %% If there is series field
+        { " of " * series * bst.series.post * }
+      if$
+%       "volume and number" number either.or.check
+    }
+  if$
+}
+
+%%% series
+FUNCTION {output.series}
+{ series empty$
+    { "" }
+    { bst.series.pre series * bst.series.post * }
+ if$
+}
+
+%%% number and series
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+      bst.hide.month #0 = not or
+        % number is empty
+        { series empty$
+            { "" }
+            % series is not empty.
+            { output.series }
+          if$
+        }
+        % number is not empty$
+        { series empty$
+            { bst.number.pre number * bst.number.post * }
+            % series is not empty.
+            { bst.in bst.series.pre * series * bst.series.post *
+              bst.number.pre * number * bst.number.post * }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+%%% Number or not.
+FUNCTION {is.num}
+{ chr.to.int$
+  duplicate$ "0" chr.to.int$ < not
+  swap$ "9" chr.to.int$ > not and
+}
+
+FUNCTION {extract.num}
+{ duplicate$ 't :=
+  "" 's :=
+  { t empty$ not }
+  { t #1 #1 substring$
+    t #2 global.max$ substring$ 't :=
+    duplicate$ is.num
+      { s swap$ * 's := }
+      { pop$ "" 't := }
+    if$
+  }
+  while$
+  s empty$
+    'skip$
+    { pop$ s }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%      edition
+
+% Convert edition to 1st, 2nd, 3rd, 4th etc
+FUNCTION {eng.ord}
+{ duplicate$ "1" swap$ *
+  #-2 #1 substring$ "1" =
+     { bst.th * }
+     { duplicate$ #-1 #1 substring$
+       duplicate$ "1" =
+         { pop$ bst.st * }
+         { duplicate$ "2" =
+             { pop$ bst.nd * }
+             { "3" =
+                 { bst.rd * }
+                 { bst.th * }
+               if$
+             }
+           if$
+          }
+       if$
+     }
+   if$
+}
+
+% Convert first, second etc in edition field to 1st, 2nd (from jfm.bst)
+FUNCTION {convert.edition}
+{ edition extract.num "l" change.case$ 's :=
+  s "first" = s "1" = or
+    { bst.first }
+    { s "second" = s "2" = or
+        { bst.second }
+        { s "third" = s "3" = or
+            { bst.third }
+            { s "fourth" = s "4" = or
+                { bst.fourth }
+                { s "fifth" = s "5" = or
+                    { bst.fifth }
+                    { s #1 #1 substring$ is.num
+                        { s eng.ord }
+                        { edition }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% edition
+FUNCTION {format.edition}
+{ edition empty$
+    { "" }
+    { output.state mid.sentence =
+        { bst.edition.pre convert.edition "l" change.case$ * bst.edition.post * }
+        { bst.edition.pre convert.edition "t" change.case$ * bst.edition.post * }
+      if$
+    }
+  if$
+}
+
+%%% month
+FUNCTION {format.month}
+{ month empty$
+  bst.hide.month #0 = not or
+    { "" }
+    { bst.month.pre month * bst.month.post * }
+  if$
+}
+
+%%% year and month
+FUNCTION {format.date}
+{ format.month format.year *
+}
+
+%%% Is multiple pages like 1-100?
+FUNCTION { multi.page.check }
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+
+%%% pages
+FUNCTION {format.pages}
+{ pages empty$
+    { "" }
+    { pages multi.page.check
+      { bst.pages.pre pages n.dashify tie.or.space.connect * bst.pages.post }
+      { bst.page.pre pages tie.or.space.connect * bst.page.post }
+     if$
+    }
+ if$
+}
+
+%%% number
+FUNCTION {format.number}
+{ number empty$
+  bst.hide.number #0 = not or
+    { "" }
+    { bst.number.pre number * bst.number.post * }
+  if$
+}
+
+%%% volume
+FUNCTION {format.volume}
+{ volume empty$
+    'skip$
+    { bst.volume.pre volume * bst.volume.post *
+      bst.year.position #3 =
+        { format.year * }
+        'skip$
+      if$
+    }
+  if$
+}
+
+%%% number, page
+FUNCTION {format.number.pages}
+{ number empty$
+    { format.pages }
+    { format.number format.pages * }
+  if$
+}
+
+%%% volume, page
+FUNCTION {format.volume.pages}
+{ volume empty$
+    { format.pages }
+    { format.volume format.pages * }
+  if$
+}
+
+%%% volume, number, page
+FUNCTION {format.volume.number.pages}
+{ volume empty$
+    { number empty$
+        { format.pages }
+        { format.number format.pages * }
+      if$
+    }
+    { number empty$
+        { format.volume format.pages * }
+        { format.volume format.number * format.pages * }
+      if$
+    }
+  if$
+}
+
+% volume, number, page
+FUNCTION {format.vol.num.pages}
+{ volume empty$
+    %% volume is empty.
+    { number empty$
+        %% number is empty.
+        { pages empty$
+            % warning
+            { "there is no volume, number, and pages in " cite$ * warning$ "" } 
+            { "" format.pages * }
+         if$
+        }
+        %% number is not empty.
+        % warning
+        { "there's a number but no volume in " cite$ * warning$
+          format.number.pages }
+     if$
+    }
+    %% volume is not empty.
+    { number empty$
+        %% number is empty.
+        { format.volume.pages }
+        %% number is not empty.
+        { format.volume.number.pages }
+     if$
+    }
+  if$
+}
+
+%%% chapter
+FUNCTION {format.chapter}
+{ chapter empty$
+    { "" }
+    { type empty$
+        { bst.chapter.pre chapter tie.or.space.connect * bst.chapter.post }
+        { ", " * type " " * chapter * }
+      if$
+    }
+  if$
+}
+
+%%% chapter, pages
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    { pages empty$
+        { "" }
+        { "" format.pages * }
+      if$
+    }
+    { pages empty$
+        { "" format.chapter * }
+        { "" format.chapter * format.pages * }
+      if$
+    }
+  if$
+}
+
+%%% editor and booktitle
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+    { "" }
+    { editor empty$
+        { bst.in format.btitle * }
+        { bst.editor.btitle.order #0 =
+            { bst.in format.editors.x * " " * format.btitle * }
+            { bst.in format.btitle * " " * format.editors.x * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% howpublished
+FUNCTION {format.howpublished}
+{ howpublished empty$
+    { "" }
+    { bst.howpublished.pre howpublished * bst.howpublished.post * }
+  if$
+}
+
+%%% address
+FUNCTION {format.address}
+{ address empty$
+    { "" }
+    { bst.address.pre address * bst.address.post * }
+  if$
+}
+
+%%% publisher
+FUNCTION {format.publisher}
+{ publisher empty$
+    { "" }
+    { bst.publisher.pre publisher * bst.publisher.post * }
+  if$
+}
+
+%%% organization
+FUNCTION {format.organization}
+{ organization empty$
+    { "" }
+    { bst.organization.pre organization * bst.organization.post * }
+  if$
+}
+
+%% publisher and address
+FUNCTION {output.publisher.address}
+{ address empty$
+    { format.publisher "publisher" output.check.nocomma }
+    { bst.address.position #0 = 
+        { format.address output.nocomma
+          format.publisher "publisher" output.check.nocomma }
+        { format.publisher "publisher" output.check.nocomma
+          format.address output.nocomma }
+      if$
+    }
+  if$
+}
+
+%% address, organization, publisher
+FUNCTION {output.address.organization.publisher}
+{ address empty$
+    %% address is empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            'skip$
+            { format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            { format.organization "organization" output.check.nocomma }
+            { format.organization "organization" output.check.nocomma
+              format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+     if$
+    }
+    %% address is not empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            %% publisher is empty
+            { format.address output.nocomma }
+            %% publisher is not empty
+            { bst.address.position #0 =
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            %% publisher is empty
+            { format.organization "organization" output.check.nocomma
+              format.address output.nocomma }
+            %% publisher is not empty
+            { format.organization "organization" output.check.nocomma
+              bst.address.position #0 = 
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+     if$
+    }
+  if$
+}
+
+%%% misc
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+    'skip$
+    { pop$ " " type * }
+  if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+    { bst.techrep }
+    { " " type * }
+  if$
+  number empty$
+    { "t" change.case$ }
+    { number tie.or.space.connect }
+  if$
+}
+
+%%% phdthesis
+FUNCTION {format.phd}
+{ bst.phdthesis }
+
+%%% mastersthesis
+FUNCTION {format.mthesis}
+{ bst.mthesis }
+
+%%% school
+FUNCTION {format.school}
+{ school empty$
+    { "" }
+    { bst.school.pre school * bst.school.post * }
+  if$
+}
+
+%%% institution
+FUNCTION {format.institution}
+{ institution empty$
+    { "" }
+    { bst.institution.pre institution * bst.institution.post * }
+  if$
+}
+
+%%% remove first ? characters.
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+
+FUNCTION {format.note}
+{ note empty$
+    { "" }
+    { bst.note.pre note * bst.note.post * }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        \havarditem
+
+FUNCTION {output.bibitem}
+{ newline$
+  "\harvarditem[" write$
+  alabel write$                 % alabel <- abbreviated citation
+  "]{" write$
+  flabel write$                 % flabel <- full citation
+  "}{" write$
+  cyear write$
+  % cyear = year
+  "}{" write$
+  cite$ write$                  % cite$ -> pusch keyword
+  "}" write$
+  % If number index is on
+  bst.use.number.index #0 =
+     'skip$
+     { index #1 + 'index :=
+       "" 'preone :=
+       "" 'preten :=
+       bst.number.index.digit "1" =
+         'skip$
+         { bst.number.index.digit "2" =
+           { "\hskip0.5em" 'preone := }
+           { bst.number.index.digit "3" =
+              { "\hskip1em" 'preone :=
+                "\hskip0.5em" 'preten := }
+              'skip$
+             if$
+           }
+         if$
+         }
+       if$  
+     }
+  if$
+  newline$
+  before.all 'output.state :=
+  ""
+  % number index
+  bst.use.number.index #0 =
+     'skip$
+     { index #10 <
+         % Insert spaces according to digit of number index.
+         { preone }
+         { index #100 <
+             { preten }
+             { "" }
+           if$
+         }
+       if$
+       bst.number.index.pre * index int.to.str$ * bst.number.index.post * write$
+     }
+ if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        article
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.journal "journal" output.check.nocomma
+  bst.year.position #2 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+  format.vol.num.pages output.nocomma
+
+  bst.year.position #1 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        book
+
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check 
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  format.edition output.nocomma
+  format.book.pages output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        booklet
+
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output.nocomma
+  format.year output.nocomma
+  format.misc.title "title" output.check.nocomma
+  format.howpublished output.nocomma
+  format.address output.nocomma
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inbook
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+%   format.book remove.pre.comma "title" output.check.nocomma
+  format.book "title" output.check.nocomma
+  format.edition output.nocomma
+
+  format.bvolume output.nocomma
+  format.chapter.pages "chapter and pages" output.check.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       incollection
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  % For JPE, publisher and its address are placed before edition,
+  % chapter and page number.
+  output.address.organization.publisher
+  format.edition output.nocomma
+  format.chapter.pages output.nocomma
+%   output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inproceedings
+
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  format.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       conference
+
+FUNCTION {conference}
+{ inproceedings }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       manual
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization empty$
+        'skip$
+        { organization output.nonnull.nocomma
+          address output.nocomma
+        }
+      if$
+    }
+    { format.authors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  author empty$
+    { organization empty$
+        { format.address new.block.check
+          format.address output.nocomma
+        }
+        'skip$
+      if$
+    }
+    { output.address.organization.publisher }
+  if$
+  format.edition output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       mastersthesis
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.mthesis format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       misc
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Online
+
+FUNCTION {online}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       phdthesis
+
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  format.phd
+  format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  address empty$
+    'skip$
+    { format.address output.nocomma }
+  if$
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       proceedings
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization output.nocomma }
+    { format.editors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.btitle remove.pre.comma "title" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       techreport
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.tr.number output.nonnull.nocomma
+  format.institution "institution" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       unpublished
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  bst.year.position #0 = not
+    { format.date remove.pre.comma output.nocomma }
+    { month empty$
+        'skip$
+        { format.month remove.pre.comma output.nocomma }
+      if$
+    }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note "note" output.check.nocomma
+  fin.entry
+}
+
+FUNCTION {default.type}
+{ misc }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Alias for month names:
+
+MACRO {jan} {"January"}
+MACRO {feb} {"February"}
+MACRO {mar} {"March"}
+MACRO {apr} {"April"}
+MACRO {may} {"May"}
+MACRO {jun} {"June"}
+MACRO {jul} {"July"}
+MACRO {aug} {"August"}
+MACRO {sep} {"September"}
+MACRO {oct} {"October"}
+MACRO {nov} {"November"}
+MACRO {dec} {"December"}
+
+%%% Read entries:
+READ
+
+%%% Variable for remembering the order of citation.
+INTEGERS { order.num }
+FUNCTION {initialize.order.num}
+{
+  #1 'order.num :=
+}
+%%% Initialize a variables
+EXECUTE {initialize.order.num}
+
+%%% Variable for remembering the order of citation.
+FUNCTION {set.order.cited}
+{
+  order.num 'order.cited :=
+  #1 order.num + 'order.num :=
+}
+%%% Iterate for all entries:
+ITERATE {set.order.cited}
+
+%%% check the value of nameorder field.
+FUNCTION {set.nameorder}
+{ nameorder empty$
+    { "" 'nameorder.temp := }
+    { nameorder 'nameorder.temp := }
+  if$
+}
+%%% Iterate for all entries:
+ITERATE {set.nameorder}
+
+%%% Remove symbols and convert to lowercase.
+FUNCTION {sortify}
+{ purify$ "l" change.case$ }
+
+%%% names for sorting
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { nameptr #1 >
+        { ", " * }
+        'skip$
+      if$
+      s nameptr "{ll}{ f}{ j}" format.name$ 't :=
+      nameptr numnames = t "others" = and
+        { bst.and.others.output *}
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.names.abb}
+{ 's :=
+  s num.names$ 'numnames :=
+  numnames bst.and.others.num <
+     { s sort.format.names }
+     { s #1 "{ll}{ f}{ j}" format.name$ " zz " * }
+  if$
+}
+
+%%% Label for full author name.
+FUNCTION {format.lab.names.full}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{vv~}{ll}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                  { bst.and.nameorder * t * }
+                  { ", " * t * }
+                if$
+              }
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 > 
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.ands * t * }
+                        if$
+                      }
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.and * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+  numnames #1 > #1 #2 = and {", eds" *} {} if$
+  numnames #1 = #1 #2 = and {", ed" *} {} if$
+}
+
+%%% laberl for abbreviated author name.
+FUNCTION {format.lab.names.abb}
+{ 's :=
+   s num.names$ 'numnames :=
+   numnames bst.and.others.num <
+     % if the number of authors is less than bst.and.others.num, full name.
+     { s format.lab.names.full }
+     % if the number of authors is equal or more than bst.and.others.num, abbreviated name.
+     { s #1 "{ll}" format.name$ bst.and.others.output * }
+   if$
+}
+
+%%% abbreviated author
+FUNCTION {author.key.label.abb}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.key.label.full}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {format.names.full.wo.and}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{ll}{, ff}{, jj}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { " " * t * }
+              { t "others" =
+                  { " " * }
+                  { numnames #2 > 
+                      { " " * t * }
+                      { " " * t * }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+}
+
+FUNCTION {author.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.editor.key.full.wo.and}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.names.full.wo.and }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {editor.key.organization.key.full.wo.and}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.key.organization.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+%%% abbreviated author
+FUNCTION {author.editor.key.label.abb}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.abb }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.editor.key.label.full}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.full }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.full}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.abb}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.full}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.full }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.abb}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.abb }
+  if$
+}
+
+%%% Convert numbers: 0->9, 1->8, 2->7,..., 9->0
+FUNCTION {reverse.num}
+{ 's :=
+  s "1" =
+    { "8" 'year.num := }
+    { s "2" =
+        { "7" 'year.num := }
+        { s "3" =
+            { "6" 'year.num := }
+            { s "4" =
+                { "5" 'year.num := }
+                { s "5" =
+                    { "4" 'year.num := }
+                    { s "6" =
+                        { "3" 'year.num := }
+                        { s "7" =
+                            { "2" 'year.num := }
+                            { s "8" =
+                                { "1" 'year.num := }
+                                { s "9" =
+                                    { "0" 'year.num := }
+                                    { s "0" =
+                                        { "9" 'year.num := }
+                                        { "9" 'year.num := }
+                                    if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+  year.num
+}
+
+%%% Convert year (large number -> small number)
+FUNCTION {convert.year}
+{ 't := 
+  bst.reverse.year #0 =
+    { t 'tt := }
+    { t #1 #1 substring$ reverse.num 
+      t #2 #1 substring$ reverse.num *
+      t #3 #1 substring$ reverse.num *
+      t #4 #1 substring$ reverse.num * 'tt := }
+  if$
+  tt
+}
+
+%%% cyear
+FUNCTION {calc.cyear}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.full.wo.and
+    { type$ "proceedings" =
+        'editor.key.organization.key.full.wo.and
+        { type$ "manual" =
+            'author.key.organization.key.full.wo.and
+            'author.key.full.wo.and
+          if$
+        }
+      if$
+    }
+  if$
+  duplicate$
+  year empty$
+    { "2199" 'cyear := }
+    { year 'cyear := }
+  if$
+  year empty$
+    { " " "2199" convert.year * field.or.null * }
+    { " " year convert.year * field.or.null * }
+  if$
+  sortify 'sort.label :=
+  % For debug
+  econ.debug #0 = not
+    { "sort.label = ``\texttt{" write$
+      sort.label write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+ pop$
+}
+
+FUNCTION {calc.sort.label.abb}
+{ author empty$
+    { editor empty$
+       { "" }
+       { editor 's := }
+      if$
+    }
+    { author 's := }
+  if$
+  s sort.format.names.abb 't :=
+  year empty$
+    { t sortify " " * "2199" convert.year * 'sort.label.abb := }
+    { t sortify " " * year convert.year * 'sort.label.abb := }
+  if$
+  econ.debug #0 = not
+    { "sort.label.abb = ``\texttt{" write$
+      sort.label.abb write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+  if$
+}
+
+%%% flabel
+FUNCTION {calc.flabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.full
+    { type$ "proceedings" =
+        'editor.key.organization.label.full
+        { type$ "manual" =
+            'author.key.organization.label.full
+            'author.key.label.full
+          if$
+        }
+      if$
+    }
+  if$
+  'flabel :=
+  author empty$
+    'skip$
+    { author num.names$ 'numnames :=
+      numnames bst.max.author.num >
+        { alabel 'flabel := }
+        'skip$
+      if$
+    }
+  if$
+  % For debug
+  econ.debug #0 = not
+    { "flabel = ``\texttt{" write$
+      flabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% alabel
+FUNCTION {calc.alabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.abb
+    { type$ "proceedings" =
+        'editor.key.organization.label.abb
+        { type$ "manual" =
+            'author.key.organization.label.abb
+            'author.key.label.abb
+          if$
+        }
+      if$
+    }
+  if$
+  'alabel :=
+  % For debug
+  econ.debug #0 = not
+    { "alabel = ``\texttt{" write$
+      alabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% title for sorting
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+
+%%% author for sorting
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+%%% editor for sorting
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+
+%%% 1,...,9 -> 001,...,009
+%%% 10,...,99 -> 010,...,099
+FUNCTION {add.zero.to.number}
+{ 's :=
+    s text.length$ #1 =
+      { "00" s * }
+      { s text.length$ #2 =
+          { "0" s * }
+          { s }
+        if$
+      }
+   if$
+}
+
+%% entry type
+FUNCTION {bst.sort.entry.type.order}
+{ 'item.type :=
+  item.type "article" =
+    { "01" }
+    { item.type "book" =
+        { "02" }
+        { item.type "booklet" =
+            { "03" }
+            { item.type "comment" =
+                { "04" }
+                { item.type "conference" =
+                    { "05" }
+                    { item.type "inbook" =
+                        { "06" }
+                        { item.type "incollection" =
+                            { "07" }
+                            { item.type "inproceedings" =
+                                { "08" }
+                                { item.type "manual" =
+                                    { "09" }
+                                    { item.type "masterthesis" =
+                                        { "10" }
+                                        { item.type "misc" =
+                                           { "11" }
+                                           { item.type "phdthesis" =
+                                              { "12" }
+                                              { item.type "proceedings" =
+                                                 { "13" }
+                                                 { item.type "techreport" =
+                                                    { "14" }
+                                                    { item.type "unpublished" =
+                                                       { "15" }
+                                                       { "16" }
+                                                      if$
+                                                    }
+                                                   if$
+                                                 }
+                                                if$
+                                              }
+                                             if$
+                                           }
+                                          if$
+                                        }
+                                      if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+}
+
+%%% Create sort.key$: absorder -> author -> year -> order -> month -> title.
+FUNCTION {presort.one}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " *
+  sort.label.abb *
+  " " *  
+  type$ "book" = type$ "inbook" = or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  * " " *
+  " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " * sort.label * " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% Codes for debugging
+FUNCTION {calc.alabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.alabel: alabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {calc.flabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.flabel: flabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {presort.one.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (1st time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (2nd time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.cyear.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.cyear: sort.label = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.sort.label.abb.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.sort.label.abb: sort.label.abb = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+%%% alabel
+EXECUTE {calc.alabel.mess}
+ITERATE {calc.alabel}
+
+%%% flabel
+EXECUTE {calc.flabel.mess}
+ITERATE {calc.flabel}
+
+%%% cyear and sort.label
+EXECUTE {calc.cyear.mess}
+ITERATE {calc.cyear}
+
+%%%
+EXECUTE {calc.sort.label.abb.mess}
+ITERATE {calc.sort.label.abb}
+
+%%% Sorting by $sort.key (first time)
+%
+% Sorting is done in two times. This is the first time.
+%
+EXECUTE {presort.one.mess}
+ITERATE {presort.one}
+SORT
+
+FUNCTION {forward.pass}
+{ bst.use.bysame #0 = bst.use.bysame #2 = or
+    % Not use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+    }
+    % Use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+      author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+      if$
+      'this.author :=
+      % format.names 'this.author :=
+      this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {reverse.pass}
+{ next.extra "b" =
+    { "a" 'extra.label := }
+    'skip$
+  if$
+  extra.label empty$ not
+    { cyear extra.label * }
+    { cyear "" * }
+  if$
+  "" field.or.null *
+  'cyear :=
+  extra.label 'next.extra :=
+}
+
+%%% \bysame
+ITERATE {forward.pass}
+
+REVERSE {reverse.pass}
+
+%%% Sorting by sort.key$ (second time)
+EXECUTE {presort.two.mess}
+ITERATE {presort.two}
+SORT
+
+FUNCTION {reset.prev.author}
+{ "xxyyzz" 'prev.author := }
+
+EXECUTE {reset.prev.author}
+
+FUNCTION {forward.pass.two}
+{ bst.use.bysame #1 = 
+    { author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+     if$
+     'this.author :=
+     this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+     if$
+    }
+   'skip$
+  if$
+}
+
+ITERATE {forward.pass.two}
+
+FUNCTION{punctuation}
+{
+  "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" write$ newline$
+  "%  This bbl file is created by " econ.file * " ver." * econ.version *          write$ newline$
+  "%  The latest " econ.file * " is available at " *			write$ newline$
+  "%  <https://github.com/ShiroTakeda/econ-bst>"                        write$ newline$ newline$
+}
+
+EXECUTE {punctuation}
+
+FUNCTION {begin.bib}
+{
+  preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  bst.use.bysame #0 =
+     % Not use \bysame.
+     'skip$
+     % Use \bysame.
+     { "%%% Definition of \bysame" write$ newline$
+       "\ifx\undefined\bysame" write$ newline$
+       "\newcommand{\bysame}{" bst.bysame.definition * "}" *
+       write$ newline$
+       "\fi" write$ newline$ newline$ }
+  if$
+  %% When number index is attached to the beginning of each item.
+  bst.use.number.index #0 =
+     'skip$
+     { bst.number.index.digit "1" =
+         % one digit.
+         { bst.number.index.bibhang.one }
+         { bst.number.index.digit "2" =
+            % two digits.
+            { bst.number.index.bibhang.ten }
+            % three or more digits.
+            { bst.number.index.bibhang.hund }
+           if$
+         }
+       if$
+       'hang :=
+       "%%% Redefinition of \bibhang" write$ newline$
+       "\ifx\undefined\bibhang" write$ newline$
+       "\relax" write$ newline$
+       "\else" write$ newline$
+       "\setlength{\bibhang}{"
+       hang * "}" * write$ newline$ 
+       "\fi" write$ newline$ newline$
+       }
+  if$
+  "\begin{thebibliography}{xxx}" write$ newline$
+
+  %% Initialize the variable `index'.
+  #0 'index :=
+}
+
+FUNCTION {end.bib}
+{ newline$ "\end{thebibliography}" write$ newline$ }
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+EXECUTE {end.bib}
+
+%  --------------------
+%  Local Variables:
+%  fill-column: 78
+%  mode: bst
+%  End:
diff --git a/Master/texmf-dist/bibtex/bst/econ-bst/econ-no-sort.bst b/Master/texmf-dist/bibtex/bst/econ-bst/econ-no-sort.bst
new file mode 100644
index 00000000000..b2cbcd057ee
--- /dev/null
+++ b/Master/texmf-dist/bibtex/bst/econ-bst/econ-no-sort.bst
@@ -0,0 +1,3579 @@
+%% econ.bst: BibTeX style file for papers in economics.
+%
+% Author: Shiro Takeda
+% Maintainer: Shiro Takeda
+% Copyright (C) 2001-2018 Shiro Takeda
+% First-written:       <2007/07/28>
+% Version: 2.7
+% Keywords: TeX, BibTeX, bst 
+% URL: https://github.com/ShiroTakeda/econ-bst
+
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% The Current Maintainer of this work is Shiro Takeda.
+
+%% Main features of econ.bst.
+
+% "econ.bst" is a BibTeX style file for economics. It provids the following
+% features:
+
+% 1) The author-year type citation (you need "natbib.sty" as well).
+% 2) Reference style used in economics papers ("econ.bst" is not a BibTeX style
+%    for a specific journal).
+% 3) Highly customizable.  You can easily customize reference style as you wish.
+% 4) You can use "certified random order" proposed by Ray ⓡ Robson (2018)
+%    (http://dx.doi.org/10.1257/aer.20161492).
+
+% Bug reports, requests and suggestions are welcome. 
+
+% For changelogs, see CHANGES.txt file.
+
+% version number
+FUNCTION {econ.version} { "2.7" }
+
+% File name
+FUNCTION {econ.file} { "econ.bst" }
+
+% Debug mode. Non-zero makes debug mode on.
+FUNCTION {econ.debug}
+{ #0 }    % Debug mode off (default).
+% { #1 }    % Debug mode on.
+
+ENTRY
+  %%% Declaration of field
+  { access address author booktitle chapter doi edition editor howpublished
+    institution journal key month note number organization pages publisher
+    school series title type url volume year
+  % Fields specific to econ.bst
+    order absorder nameorder
+  }
+
+  % Definition of entry variable.  The entry variable is a variable which has
+  % different values according to different entries.
+  %% Integer entry variable:
+  { order.cited }
+
+  %% String entry variable
+  { label cyear flabel alabel extra.label sort.label sort.label.abb
+    extra.label.bysame nameorder.temp jname }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Use \bysame or not.
+%
+% If set to #0, \bysame is not used.
+% If set to #1, \bysame is used 
+% If set to #2, \bysame is used (alternative abbreviation style).
+%
+% Note that integer number is expressed as # + integer in bst file.
+% \bysame is the function that abbreviates succession of the same authors' name by ---.
+%
+% See econ-sample.pdf for details.
+% 
+FUNCTION {bst.use.bysame}
+% { #0 }    % Not use \bysame
+{ #1 }    % -> Use \bysame (default)
+% { #2 }    % -> Use \bysame of alternative style.
+
+% The definition of \bysame command.
+%
+FUNCTION {bst.bysame.definition}
+{ "\hskip.3em \leavevmode\rule[.5ex]{3em}{.3pt}\hskip0.5em" } % (default)
+% { "\leavevmode\hbox to\leftmargin{\hrulefill\,\,}" } % If you set #2 to bst.use.bysame, use this.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% The order of fist and last name.
+%
+FUNCTION {bst.author.name}
+{ #0 }    % (default)
+% { #1 }
+% { #2 }
+
+% Case of #0: First author -> last-first, other authors -> first-last. 
+% Fujita, Masahisa, Paul R. Krugman, and Anthony J. Venables. 
+
+% Case of #1: All authors -> last-first
+% Fujita, Masahisa, Krugman, Paul R., and Venables, Anthony J.
+
+% Case of #2: All authors -> first-last
+% Masahisa Fujita, Paul R. Krugman, and Anthony J. Venables.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Abbreviate first name of authors (editors):
+%
+FUNCTION {bst.first.name.initial}
+{ #0 }    % #0 -> full letters (default).
+% { #1 }    % Non-zero -> initial letter only.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Decapitalize of strings in title field.
+%
+FUNCTION {bst.title.lower.case}
+{ #0 }    % If #0, not decapitalize title (default).
+% { #1 }    % If non-#0, decapitalize title
+
+% Hide title filed.
+%
+FUNCTION {bst.hide.title}
+{ #0 }    % #0 -> Title field is displayed (default)
+% { #1 }    % Non-zer -> Title field is hidden 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide month.
+%
+FUNCTION {bst.hide.month}
+{ #0 }    % #0 -> show month field (default).
+% { #1 }    % non-#0 -> hide month field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Attach number index like plain.bst.
+%
+FUNCTION {bst.use.number.index}
+{ #0 }    % Not use number index (default).
+% { #1 }    % Non-#0 -> Use number index
+
+% The string before number index:
+%
+FUNCTION {bst.number.index.pre}
+{ "[" }    % (default)
+
+% The string after number index.  Adjustment is recommended.
+%
+FUNCTION {bst.number.index.post}
+{ "]\hskip1.0em " }    % (default)
+
+% Maximum digit of number index:
+% If the number of reference items >= 100, set 3 to this function.
+% If the number of reference items < 100, set 2 to this function.
+% If the number of reference items < 10, set 1 to this function.
+%
+FUNCTION {bst.number.index.digit}
+{ "2" }    % (default)
+% { "3" }
+
+% The functions below are used to adjust space and postion.  If you use fonts
+% other than computer modern fonts, you had better make adjustments.
+%
+% Setting for bst.number.index.digit = 1:
+FUNCTION {bst.number.index.bibhang.one}
+{ "2.05em" }    % (default)
+% Setting for bst.number.index.digit = 2:
+FUNCTION {bst.number.index.bibhang.ten}
+{ "2.55em" }    % (default)
+% Setting for bst.number.index.digit = 3:
+FUNCTION {bst.number.index.bibhang.hund}
+{ "3.05em" }    % (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Position of "year":
+%
+% You can choose the position of year by this function.
+%
+% If set to #0, year is placed right after "author".
+% If set to non-zero, year is placed at the end (before note field) except for
+% aritcle type entry. 
+%
+% In article type entry, the position of year changes according to the
+% following rule:
+% 
+% #1 -> year is placed at the end.
+% #2 -> year is placed after journal name in aritcle type entry.
+% #3 -> year is placed after volume in aritcle type entry.
+%
+FUNCTION {bst.year.position}
+{ #0 }    % (default).
+% { #1 }    % Last place before note.
+% { #2 }    % After journal name for aticle type entry.
+% { #3 }    % After volume for aticle type entry.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If 0, references are sorted by old documents -> recent documents.  If
+% non-zero, reverse order.
+FUNCTION {bst.reverse.year}
+{ #0 }    % Normal order (old -> recent) (default).
+% { #1 }    % inverse order (recent -> old)
+
+% If non-zero, sort references by using year field as the primary key
+% (chronological sorting).
+FUNCTION {bst.sort.year}
+{ #0 }    % Normal case: year is used as the sorting key next to author (default).
+% { #1 }    % year is used as the primary sorting key.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If non-zero, references are listed in citation order.
+%
+FUNCTION {bst.no.sort}
+% { #0 }    % (default)
+{ #1 }    % listed in citation order.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Non-zero -> sort references by entry type (article, book, incollection etc.)
+%
+FUNCTION {bst.sort.entry.type}
+{ #0 }    % #0 -> Normal (not sort references by entry type) (default).
+% { #1 }    % Non-zero -> sort references by entry type.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use absorder field to sort items.  Otherwise, ignore absorder field.
+%
+FUNCTION {bst.notuse.absorder.field}
+{ #0 }    % #0 -> Use absorder (default).
+% { #1 }    % Non-#0 -> Not use absorder.
+%
+% Order of priority to sort items
+% 
+% absorder -> author -> year -> order -> month -> title
+%
+% wehre absorder and order fields are specific to econ.bst.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use order field to sort items.  Otherwise, ignore order field.
+% Note: order field is specific to econ.bst.
+FUNCTION {bst.notuse.order.field}
+{ #0 }    % #0 -> Use order field (default).
+% { #1 }    % Non-#0 -> not use order field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%     and
+
+%%% String used to separate author names in references.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in references (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.ands}
+{ ", and " }    % (default)
+
+%%% String used to separate author names in citation part.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.cite.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in citation part (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.cite.ands}
+{ " and " }    % (default)
+
+%%% If you want to use random author order for some bibliography entries, set
+% non-zero to this function.
+% 
+FUNCTION {bst.use.nameorder}
+{ #1 }	% Use random order (default)
+% { #0 }	% Not use random order
+
+%%% String used to separate author names in references for the entry of random
+% author order.
+%
+FUNCTION {bst.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+%%% String used to separate author names in citation part for the entry of
+% random author order
+%
+FUNCTION {bst.cite.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Author names in the citation part are abbreviated by et al. if the number of
+% authors is greater or equal to bst.and.others.num.
+FUNCTION {bst.and.others.num}
+{ #3 }    % If the number of authors is greater or equal to three (default).
+
+% If the number of authors is greater or equal to bst.max.author.num, only
+% first author is listed and other authors' names are abbreviated as "et al.".
+FUNCTION {bst.max.author.num}
+{ #12 }    % If the number of authors is greater or equal to 12 (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Strings used when abbreviating multiple-authors in citation part.
+FUNCTION {bst.and.others}
+{ " et~al." }    % (default)
+
+% Strings used when abbreviating multiple-authors in citation part for entries
+% with random author order.
+FUNCTION {bst.and.others.nameorder}
+{ " \textcircled{r}~al." }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       author 
+
+% The string before author:
+%
+FUNCTION {bst.author.pre}
+{ "" }    % (default)
+
+% The string after author:
+%
+FUNCTION {bst.author.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       year
+
+% The string before year only for aritcle type entry.
+%
+FUNCTION {bst.year.pre}
+{ " (" }    % (default)
+
+% The string after year only for aritcle type entry.
+%
+FUNCTION {bst.year.post}
+{ ") " }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.pre}
+{ " (" }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.post}
+{ ") " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       title (except for title in book)
+
+% The string before title:
+%
+FUNCTION {bst.title.pre}
+{ "``" }    % (default)
+
+% The string after title:
+%
+FUNCTION {bst.title.post}
+{ ",''" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       tile for book:
+
+% The string before book title:
+%
+FUNCTION {bst.book.pre}
+{ " \textit{" }    % (default)
+
+% The string after book title:
+%
+FUNCTION {bst.book.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       booktitle
+
+% The string before booktitle:
+%
+FUNCTION {bst.btitle.pre}
+{ " \textit{" }    % (default)
+
+% The string after booktitle:
+%
+FUNCTION {bst.btitle.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       journal name
+
+% The string before journal name:
+%
+FUNCTION {bst.journal.pre}
+{ " \textit{" }    % (default)
+
+% The string after journal name:
+%
+FUNCTION {bst.journal.post}
+{ "}" }    % (default)
+
+% Use the abbreviated journal name
+%
+% If set to #0, do not use abbreviated journal name.
+% If set to non-#0, use abbreviated journal name.
+%
+FUNCTION {bst.journal.name.abb}
+{ #0 }    % (default)
+% { #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       editor notation:
+
+% The string that indicates multiple editors:
+%
+FUNCTION {bst.editors}
+{ " eds. " }    % (default)
+
+% The string that indicates single editor:
+%
+FUNCTION {bst.editor}
+{ " ed. " }    % (default)
+
+% Order of editor and booktitle in incollection and inproceedings entries.
+%
+% If set to #0: 	editors -> booktitle order
+% If set to non-zero:	booktitle -> editors order
+%
+FUNCTION {bst.editor.btitle.order}
+{ #0 }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       edition
+
+% The string before edition:
+%
+FUNCTION {bst.edition.pre}
+{ ", " }    % (default)
+
+% The string after edition:
+%
+FUNCTION {bst.edition.post}
+{ " edition" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       volume
+
+% The string before volume:
+%
+FUNCTION {bst.volume.pre}
+{ ", " }    % (default)
+
+% The string after volume:
+%
+FUNCTION {bst.volume.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       number
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide number.  If non-zero, number is suppressed. 
+FUNCTION {bst.hide.number}
+{ #0 }    % #0 -> show number field (default)
+% { #1 }    % non-#0 -> Hide number field.
+
+% The string before number:
+%
+FUNCTION {bst.number.pre}
+{ " (" }    % (default)
+
+% The string after number:
+%
+FUNCTION {bst.number.post}
+{ ")" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       in 
+
+% In
+%
+FUNCTION {bst.in}
+{ " in " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       page
+
+% The string before page (multiple pages):
+%
+FUNCTION {bst.pages.pre}
+{ ", " }    % (default)
+
+% The string before page:
+%
+FUNCTION {bst.page.pre}
+{ ", " }    % (default)
+
+% The string after page (multiple pages):
+%
+FUNCTION {bst.pages.post}
+{ "" }    % (default)
+
+% The string after page:
+%
+FUNCTION {bst.page.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       chapter
+
+% The string before chapter:
+%
+FUNCTION {bst.chapter.pre}
+{ ", Chap." }    % (default)
+
+% The string after chapter:
+%
+FUNCTION {bst.chapter.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       month
+
+% The string before month:
+%
+FUNCTION {bst.month.pre}
+{ ", " }    % (default)
+
+% The string after month:
+%
+FUNCTION {bst.month.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       address
+% The string before address:
+%
+FUNCTION {bst.address.pre}
+{ ", " }    % (default)
+
+% The string after address:
+%
+FUNCTION {bst.address.post}
+{ "" }    % (default)
+
+% You can choose the order of address and publisher by this function.
+%
+% If #0,	address -> publisher order (the default value).
+% If non-zero,	publisher -> address order.
+
+FUNCTION {bst.address.position}
+{ #0 }    % Address is placed before publisher (default)
+% { #1 }    % Address is placed after publisher 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       publisher
+
+% The string before publisher:
+%
+FUNCTION {bst.publisher.pre}
+{ ": " }    % (default)
+
+% The string after publisher:
+%
+FUNCTION {bst.publisher.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       series
+
+% The string before series:
+%
+FUNCTION {bst.series.pre}
+{ ", " }    % (default)
+
+% The string after series:
+%
+FUNCTION {bst.series.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       organization
+
+% The string before organization:
+%
+FUNCTION {bst.organization.pre}
+{ ", " }    % (default)
+
+% The string after organization:
+%
+FUNCTION {bst.organization.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       school
+
+% The string before school:
+%
+FUNCTION {bst.school.pre}
+{ ", " }    % (default)
+
+% The string after school:
+%
+FUNCTION {bst.school.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       institution
+
+% The string before institution:
+%
+FUNCTION {bst.institution.pre}
+{ ", " }    % (default)
+
+% The string after institution:
+%
+FUNCTION {bst.institution.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       howpublished
+
+% The string before howpublished:
+%
+FUNCTION {bst.howpublished.pre}
+{ " " }    % (default)
+
+% The string after howpublished:
+%
+FUNCTION {bst.howpublished.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       url
+
+% Show or Hide url.  If non-zero, url is displayed. Otherwise, url is suppressed. 
+FUNCTION {bst.show.url}
+{ #1 }    % non-#0 -> Show url field (default)
+% { #0 }    % #0 -> Not show url field.
+
+% The string before url:
+%
+FUNCTION {bst.url.pre}
+{ ", \url{" }	% (default)
+
+% The string after url:
+%
+FUNCTION {bst.url.post}
+{ "}" }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Access
+
+% This setting is valid only if there are "access" field in bib
+% files. The value of access field indicates accessed date for URL.
+
+% The string before access.
+FUNCTION {bst.access.pre}
+{ ", accessed on " } % (default)
+
+% The string after access.
+FUNCTION {bst.access.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       DOI (digital object identifier)
+
+% This setting is valid only if there are "doi" field in bib files.
+
+% Show or Hide DOI.  If non-zero, DOI is displayed. Otherwise, DOI is suppressed. 
+FUNCTION {bst.show.doi}
+{ #1 }    % non-#0 -> Show DOI field (default)
+% { #0 }    % #0 -> Not show DOI field.
+
+% The string before DOI:
+%
+FUNCTION {bst.doi.pre}
+{ ", \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * } % (default)
+
+% The string after DOI:
+%
+FUNCTION {bst.doi.post}
+{ "}}" }	   % (default)
+
+% How to show URL and DOI fields when both fields exist.
+%
+% #0 -> Both fields are displayed
+% #1 -> Only URL field is displayed
+% #2 -> Only DOI field is displayed
+%
+FUNCTION {bst.url.doi}
+% { #0 }    % -> Both fields are displayed
+% { #1 }    % -> Only URL field is displayed
+{ #2 }    % (default) --> Only DOI field is displayed 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Other functions:
+
+% The string before note.
+FUNCTION {bst.note.pre}
+{ ", " }    % (default)
+
+% The string after note.
+FUNCTION {bst.note.post}
+{ "" }    % (default)
+
+% The string that represents Technical report:
+%
+FUNCTION {bst.techrep}
+{ "Technical Report" }    % (default)
+
+% The string that represents master thesis:
+%
+FUNCTION {bst.mthesis}
+{ " Master's thesis" }    % (default)
+
+% The string that represents phd thesis:
+%
+FUNCTION {bst.phdthesis}
+{ " Ph.D. dissertation" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization end here:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FUNCTION {bst.first}
+{ "1st" }
+
+FUNCTION {bst.second}
+{ "2nd" }
+
+FUNCTION {bst.third}
+{ "3rd" }
+
+FUNCTION {bst.fourth}
+{ "4th" }
+
+FUNCTION {bst.fifth}
+{ "5th" }
+
+FUNCTION {bst.st}
+{ "st" }
+
+FUNCTION {bst.nd}
+{ "nd" }
+
+FUNCTION {bst.rd}
+{ "rd" }
+
+FUNCTION {bst.th}
+{ "th" }
+
+%%%%% memo by Takeda
+
+% "a" 'b := indicates substituting string "a" for variable b.
+
+% Integer number #0, #1,...
+
+%%% Function definition:
+%
+% FUNCTION {name}
+% { 's :=
+%
+% }
+%
+% This is the definition of a function named "name".   The function "name" is
+% used in the following way 
+%
+% "foo" name
+% "foo" is an argument for the function "name".
+%
+% About the definition of a function with more than two arguments, see the
+% definition of "chop.word".
+
+%%% Declaration of variables:
+
+%% String global variables:
+STRINGS { s t tt }
+STRINGS { year.num }
+STRINGS { preone preten }
+STRINGS { last.sort.label next.extra prev.author prev.author.aer this.author }
+STRINGS { hang }
+STRINGS { item.type }
+STRINGS { tempa tempb }
+
+%% Integer global variables:
+INTEGERS { nameptr namesleft numnames name.num }
+INTEGERS { multiresult }
+INTEGERS { index }
+INTEGERS { len }
+INTEGERS { last.extra.num }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+INTEGERS { last.period.comma }
+INTEGERS { len1.aer len2.aer i.aer }
+
+%%% Definition of functions:
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+
+%%% Initialize variables:
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+
+%%% Remove comma and add period:
+%
+%%%
+FUNCTION {add.period.x}
+{ duplicate$
+  #-1 #1 substring$ "," =
+    { #-2 global.max$ substring$ "." * }
+    { duplicate$
+      #-1 #2 substring$ ". " =
+        { #-3 global.max$ substring$ "." * }
+        { duplicate$
+          #-1 #2 substring$ ", " =
+            { #-3 global.max$ substring$ "." * }
+            { duplicate$
+              #-1 #2 substring$ ",'" =
+                { #-3 global.max$ substring$ ".'" * }
+                { duplicate$
+                  #-1 #2 substring$ ".'" =
+                    { #-3 global.max$ substring$ ".'" * }
+                    { duplicate$
+                      #-1 #2 substring$ ".~" =
+                        { #-3 global.max$ substring$ ".~" * }
+                        { duplicate$
+                          #-1 #2 substring$ ",~" =
+                            { #-3 global.max$ substring$ ".~" * }
+                            { duplicate$
+                              #-1 #3 substring$ ",''" =
+                                { #-4 global.max$ substring$ ".''" * }
+                                { duplicate$
+                                  #-1 #3 substring$ ".''" =
+                                    { #-4 global.max$ substring$ ".''" * }
+                                    { add.period$ }
+                                  if$
+                                }
+                              if$
+                            }
+                          if$
+                        }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {output.nonnull}
+{ 's :=
+  % mid.sentence
+  output.state mid.sentence =
+    { ", " * write$ }
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period.x " " * write$ }
+          if$
+        }
+      if$
+      % not mid.sentence, set to mid.sentence
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+
+%%% If the last character is period or comma, set non-zero to
+%%% last.period.comma.
+FUNCTION {period.comma.p}
+{ duplicate$ 't :=
+  t #-1 #1 substring$ "." = 
+  t #-1 #1 substring$ "," = or
+  t #-1 #1 substring$ ":" = or 
+  t #-1 #2 substring$ ".'" = or
+  t #-1 #2 substring$ ",'" = or
+  t #-1 #3 substring$ ".''" = or
+  t #-1 #3 substring$ ",''" = or
+  t #-1 #2 substring$ ".~" = or
+  t #-1 #2 substring$ ",~" = or
+    { #1 'last.period.comma := }
+    { #0 'last.period.comma := }
+  if$
+}
+
+%%% remove unnecessary comma.
+FUNCTION {remove.pre.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #1 #1 substring$ "," = 
+       { s #2 global.max$ substring$ }
+       { s #1 #1 substring$ "." = 
+          { s #2 global.max$ substring$ }
+          's
+         if$
+       }
+      if$
+    }
+  if$
+}
+
+%%% output.nonnull.nocomma is the same as output.nonnull except that it does
+%%% not add commas even in mid.sentence.
+FUNCTION {output.nonnull.nocomma}
+{ 's :=
+  output.state mid.sentence =
+    % mid.sentence
+    { period.comma.p "" * write$ }
+
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  last.period.comma #0 =
+    { s }
+    { s remove.pre.comma }
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output}
+% { duplicate$ empty$
+%     'pop$
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.nocomma}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull.nocomma
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output.check}
+% { 't :=
+%   duplicate$ empty$
+%     { pop$ "empty " t * " in " * cite$ * warning$ }
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.check.nocomma}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull.nocomma
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Format in bbl file:
+
+% \harvarditem[Brezis et~al.]{Brezis, Krugman and
+%   Tsiddon}{1993}{brezis93:_leapf_inter_compet}
+% Brezis, Elise~S., Paul~R. Krugman, and Daniel Tsiddon  (1993) ``Leapfrogging in
+%   International Competition: A Theory of Cycles in National Technological
+%   Leadership.'', {\em American Economic Review.}, Vol.~83. No.~5. pp.
+%   1211--1219.
+
+% \harvarditem[abbreviated citation]{full citation}{year}{keyword} ...
+
+%%% Add period and newline.
+FUNCTION {fin.entry}
+{ add.period.x
+  write$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+
+FUNCTION {new.block.check}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+
+%%% booktitle
+FUNCTION {format.btitle}
+{ booktitle empty$
+    { "" }
+    { bst.btitle.pre booktitle * bst.btitle.post * }
+  if$
+}
+
+FUNCTION {journal.name.sub}
+{ 't :=
+  t #1 #4 substring$ "The " =
+    % Use #30 to handle with the long journal name.
+    { t #5 #30 substring$ 't := }
+    'skip$
+  if$
+  t
+}
+
+FUNCTION {format.journal.name.abb}
+{ journal 's :=
+  journal 'jname :=
+  s journal.name.sub 's :=
+  bst.journal.name.abb #0 =
+    'skip$
+    { 
+       s "Academic Management Review" =
+        { "Acad. Manage. J." 'jname := }
+        'skip$
+      if$
+    }
+  if$
+  jname
+}
+
+%%% journal
+FUNCTION {format.journal}
+{ journal empty$
+    { "" }
+    { bst.journal.pre format.journal.name.abb * bst.journal.post * }
+  if$
+}
+
+%%% title for book
+FUNCTION {format.book}
+{ title empty$
+    { "" }
+    { bst.book.pre title * bst.book.post * }
+  if$
+}
+
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+    { type$ "online" = bst.show.url or
+        { bst.url.pre url * bst.url.post *
+          access empty$
+             { "" * }
+             { bst.access.pre * access * bst.access.post * }
+          if$
+        }
+        { "" }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.doi}
+{ doi empty$ bst.show.doi not or
+    { "" }
+    { bst.doi.pre doi * bst.doi.post * }
+  if$
+}
+
+FUNCTION {format.url.doi}
+{ url empty$
+    { format.doi }
+    { doi empty$
+        { format.url }
+        { bst.url.doi #0 =
+            { format.url output.nocomma
+              format.doi }
+            { bst.url.doi #1 =
+                { format.url } 
+                { format.doi }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% and others
+FUNCTION {bst.and.others.output}
+{ nameorder.temp "random" =
+  bst.use.nameorder #0 = not and
+    { bst.and.others.nameorder }
+    { bst.and.others }
+  if$
+}
+
+%%% author and editor
+
+%%% name
+FUNCTION {format.names}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+
+  { nameptr #1 =
+      % First author
+      { bst.author.name #0 =
+        bst.author.name #1 =
+        or
+           { bst.first.name.initial #0 = 
+            { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+            { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+           if$
+         }
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+           if$
+         }
+        if$
+      }
+      % The second or later authors
+      { bst.author.name #0 =
+        bst.author.name #2 =
+        or
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+             if$
+           }
+           { bst.first.name.initial #0 = 
+                { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+                { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+             if$
+           }
+        if$
+      }
+    if$
+    
+    nameptr #1 >
+      % The second or later authors
+      { numnames bst.max.author.num >
+          { bst.and.others * 
+            #1 'namesleft :=  }
+          { nameorder.temp "random" =
+            bst.use.nameorder #0 = not and
+              { bst.and.nameorder * t * }
+              { namesleft #1 >
+                  % More than one authors left
+                  { ", " * t * }
+                  % Only one author left
+                  { t "others" =
+                      { bst.and.others.output * }
+                      { numnames #2 =
+                          % Entry with two authors
+                          { bst.and * t * }
+                          { bst.ands * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% remove successive periods (commas) from author
+FUNCTION {remove.ss.period.auth}
+{ 's :=
+  s format.names 'tempa :=
+  bst.author.post 'tempb :=
+  tempb #1 #1 substring$ "}" =
+    { tempa tempb * }
+    { tempa #-1 #1 substring$ tempb #1 #1 substring$ = 
+        { tempa tempb #2 global.max$ substring$ * }
+        { tempa tempb * }
+      if$
+    }
+  if$
+}
+
+% <prev name list> <new name list> compare.names <modified name list>
+FUNCTION {compare.names.aer}
+{ 's :=
+  'tempa :=
+
+%   "current.author = " s * "\\" * write$ newline$
+%   "prev.author = " tempa * "\\" * write$ newline$
+
+  tempa num.names$ 'len1.aer :=  % len1 = the number of previous authors
+  s num.names$ 'len2.aer :=         % len2 = the number of current authors
+
+% len1.aer := min(len1.aer,len2.aer)
+% len1 -> min{ the number of previous authors, the number of current authors }
+  len1.aer len2.aer >
+    { len2.aer 'len1.aer := }
+    { }
+  if$
+
+% start with an empty string, then while the components are the same
+% add "\bysame"
+  ""
+  #1 'i.aer :=
+
+  { i.aer len1.aer > not }
+    { tempa i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      =
+        { #1 i.aer <
+            { " and " * }       % \bysame で省略する著者の前につく and 
+            { }
+          if$
+          "\bysame{}" *
+          i.aer #1 + 'i.aer := } 
+        { #-1 'len1.aer := }
+      if$
+    }
+  while$
+
+% add the rest of the second string
+  { i.aer len2.aer > not }
+    { #1 i.aer <
+        { " and " * }
+        { }
+      if$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$ *
+      i.aer #1 + 'i.aer :=
+    }
+  while$
+}
+
+%%% author
+FUNCTION {format.authors}
+{ author empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer author compare.names.aer 's :=
+          author 'prev.author.aer := }
+        { author 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors}
+{ editor empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer editor compare.names.aer 's :=
+          editor 'prev.author.aer := }
+        { editor 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+      s num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.authors.alt}
+{ author empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        {"\bysame "}
+        { bst.author.pre author remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors.alt}
+{ editor empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre editor remove.ss.period.auth * }
+      if$
+      editor num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+%%% format.in.ed.booktitle
+FUNCTION {format.editors.x}
+{ editor empty$
+    { "" }
+    { bst.editor.btitle.order #0 =
+        { "" }
+        { editor num.names$ #1 >
+           { bst.editors " by " * }
+           { bst.editor  " by " * }
+          if$
+        }
+      if$
+      editor format.names *
+      bst.editor.btitle.order #0 =
+        { editor num.names$ #1 >
+           { bst.editors * }
+           { bst.editor * }
+          if$
+        }
+        { "" * }
+      if$
+    }
+  if$
+}
+
+%%% Remove commas in the cases like "?." and "?,".
+FUNCTION {remove.irrelevant.period.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #-1 #3 substring$ "?,'" =
+      s #-1 #3 substring$ "?.'" = or
+        { s #-3 global.max$ substring$ "'" * }
+        { s #-1 #4 substring$ "?,''" =
+          s #-1 #4 substring$ "?.''" = or
+            { s #-4 global.max$ substring$ "''" * }
+            { s #-1 #2 substring$ "?," =
+              s #-1 #2 substring$ "?." = or
+                { s #-2 global.max$ substring$ "" * }
+                { s #-1 #3 substring$ "?,~" =
+                  s #-1 #3 substring$ "?.~" = or
+                    { s #-4 global.max$ substring$ "?~" * }
+                    's
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% title
+FUNCTION {format.title.sub}
+{ bst.title.lower.case #0 =
+     { bst.title.pre title * bst.title.post * }
+     { bst.title.pre title "t" change.case$ * bst.title.post * }
+  if$
+}
+
+%%% title
+FUNCTION {format.title}
+{ title empty$
+  bst.hide.title #0 = not or
+    { "" }
+    { format.title.sub remove.irrelevant.period.comma }
+  if$
+}
+
+%%% title for misc.
+FUNCTION {format.misc.title}
+{ title empty$
+    { "" }
+    { bst.title.pre title * bst.title.post * }
+  if$
+}
+
+% Convert "-" to "--" (for pages field)
+FUNCTION {n.dashify}
+{ 't :=
+  ""
+  %% while$
+  { t empty$ not }
+  { t #1 #1 substring$ "-" =
+      { t #1 #2 substring$ "--" = not
+          { "--" *
+            t #2 global.max$ substring$ 't :=
+          }
+          { { t #1 #1 substring$ "-" = }
+            { "-" *
+              t #2 global.max$ substring$ 't :=
+            }
+            while$
+          }
+        if$
+      }
+      { t #1 #1 substring$ *
+       t #2 global.max$ substring$ 't :=
+      }
+    if$
+  }
+  while$
+}
+
+%%% year
+FUNCTION {format.year}
+{ year empty$
+    { "there's no year in " cite$ * warning$
+      ", " }
+    { type$ "article" =
+        { bst.year.pre year * extra.label * bst.year.post * }
+        { bst.year.na.pre year * extra.label * bst.year.na.post * }
+      if$
+    }
+  if$
+}
+
+%%% page for book
+FUNCTION {format.book.pages}
+{ pages empty$
+    { "" }
+    { bst.pages.pre pages * bst.pages.post * }
+  if$
+}
+
+%%% Attach tie for the string with two or less characters.
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+    { "~" }
+    { " " }
+  if$
+  swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+
+%%% volume for book
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+    { bst.volume.pre volume * bst.volume.post *
+      series empty$
+        'skip$
+        %% If there is series field
+        { " of " * series * bst.series.post * }
+      if$
+%       "volume and number" number either.or.check
+    }
+  if$
+}
+
+%%% series
+FUNCTION {output.series}
+{ series empty$
+    { "" }
+    { bst.series.pre series * bst.series.post * }
+ if$
+}
+
+%%% number and series
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+      bst.hide.month #0 = not or
+        % number is empty
+        { series empty$
+            { "" }
+            % series is not empty.
+            { output.series }
+          if$
+        }
+        % number is not empty$
+        { series empty$
+            { bst.number.pre number * bst.number.post * }
+            % series is not empty.
+            { bst.in bst.series.pre * series * bst.series.post *
+              bst.number.pre * number * bst.number.post * }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+%%% Number or not.
+FUNCTION {is.num}
+{ chr.to.int$
+  duplicate$ "0" chr.to.int$ < not
+  swap$ "9" chr.to.int$ > not and
+}
+
+FUNCTION {extract.num}
+{ duplicate$ 't :=
+  "" 's :=
+  { t empty$ not }
+  { t #1 #1 substring$
+    t #2 global.max$ substring$ 't :=
+    duplicate$ is.num
+      { s swap$ * 's := }
+      { pop$ "" 't := }
+    if$
+  }
+  while$
+  s empty$
+    'skip$
+    { pop$ s }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%      edition
+
+% Convert edition to 1st, 2nd, 3rd, 4th etc
+FUNCTION {eng.ord}
+{ duplicate$ "1" swap$ *
+  #-2 #1 substring$ "1" =
+     { bst.th * }
+     { duplicate$ #-1 #1 substring$
+       duplicate$ "1" =
+         { pop$ bst.st * }
+         { duplicate$ "2" =
+             { pop$ bst.nd * }
+             { "3" =
+                 { bst.rd * }
+                 { bst.th * }
+               if$
+             }
+           if$
+          }
+       if$
+     }
+   if$
+}
+
+% Convert first, second etc in edition field to 1st, 2nd (from jfm.bst)
+FUNCTION {convert.edition}
+{ edition extract.num "l" change.case$ 's :=
+  s "first" = s "1" = or
+    { bst.first }
+    { s "second" = s "2" = or
+        { bst.second }
+        { s "third" = s "3" = or
+            { bst.third }
+            { s "fourth" = s "4" = or
+                { bst.fourth }
+                { s "fifth" = s "5" = or
+                    { bst.fifth }
+                    { s #1 #1 substring$ is.num
+                        { s eng.ord }
+                        { edition }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% edition
+FUNCTION {format.edition}
+{ edition empty$
+    { "" }
+    { output.state mid.sentence =
+        { bst.edition.pre convert.edition "l" change.case$ * bst.edition.post * }
+        { bst.edition.pre convert.edition "t" change.case$ * bst.edition.post * }
+      if$
+    }
+  if$
+}
+
+%%% month
+FUNCTION {format.month}
+{ month empty$
+  bst.hide.month #0 = not or
+    { "" }
+    { bst.month.pre month * bst.month.post * }
+  if$
+}
+
+%%% year and month
+FUNCTION {format.date}
+{ format.month format.year *
+}
+
+%%% Is multiple pages like 1-100?
+FUNCTION { multi.page.check }
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+
+%%% pages
+FUNCTION {format.pages}
+{ pages empty$
+    { "" }
+    { pages multi.page.check
+      { bst.pages.pre pages n.dashify tie.or.space.connect * bst.pages.post }
+      { bst.page.pre pages tie.or.space.connect * bst.page.post }
+     if$
+    }
+ if$
+}
+
+%%% number
+FUNCTION {format.number}
+{ number empty$
+  bst.hide.number #0 = not or
+    { "" }
+    { bst.number.pre number * bst.number.post * }
+  if$
+}
+
+%%% volume
+FUNCTION {format.volume}
+{ volume empty$
+    'skip$
+    { bst.volume.pre volume * bst.volume.post *
+      bst.year.position #3 =
+        { format.year * }
+        'skip$
+      if$
+    }
+  if$
+}
+
+%%% number, page
+FUNCTION {format.number.pages}
+{ number empty$
+    { format.pages }
+    { format.number format.pages * }
+  if$
+}
+
+%%% volume, page
+FUNCTION {format.volume.pages}
+{ volume empty$
+    { format.pages }
+    { format.volume format.pages * }
+  if$
+}
+
+%%% volume, number, page
+FUNCTION {format.volume.number.pages}
+{ volume empty$
+    { number empty$
+        { format.pages }
+        { format.number format.pages * }
+      if$
+    }
+    { number empty$
+        { format.volume format.pages * }
+        { format.volume format.number * format.pages * }
+      if$
+    }
+  if$
+}
+
+% volume, number, page
+FUNCTION {format.vol.num.pages}
+{ volume empty$
+    %% volume is empty.
+    { number empty$
+        %% number is empty.
+        { pages empty$
+            % warning
+            { "there is no volume, number, and pages in " cite$ * warning$ "" } 
+            { "" format.pages * }
+         if$
+        }
+        %% number is not empty.
+        % warning
+        { "there's a number but no volume in " cite$ * warning$
+          format.number.pages }
+     if$
+    }
+    %% volume is not empty.
+    { number empty$
+        %% number is empty.
+        { format.volume.pages }
+        %% number is not empty.
+        { format.volume.number.pages }
+     if$
+    }
+  if$
+}
+
+%%% chapter
+FUNCTION {format.chapter}
+{ chapter empty$
+    { "" }
+    { type empty$
+        { bst.chapter.pre chapter tie.or.space.connect * bst.chapter.post }
+        { ", " * type " " * chapter * }
+      if$
+    }
+  if$
+}
+
+%%% chapter, pages
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    { pages empty$
+        { "" }
+        { "" format.pages * }
+      if$
+    }
+    { pages empty$
+        { "" format.chapter * }
+        { "" format.chapter * format.pages * }
+      if$
+    }
+  if$
+}
+
+%%% editor and booktitle
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+    { "" }
+    { editor empty$
+        { bst.in format.btitle * }
+        { bst.editor.btitle.order #0 =
+            { bst.in format.editors.x * " " * format.btitle * }
+            { bst.in format.btitle * " " * format.editors.x * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% howpublished
+FUNCTION {format.howpublished}
+{ howpublished empty$
+    { "" }
+    { bst.howpublished.pre howpublished * bst.howpublished.post * }
+  if$
+}
+
+%%% address
+FUNCTION {format.address}
+{ address empty$
+    { "" }
+    { bst.address.pre address * bst.address.post * }
+  if$
+}
+
+%%% publisher
+FUNCTION {format.publisher}
+{ publisher empty$
+    { "" }
+    { bst.publisher.pre publisher * bst.publisher.post * }
+  if$
+}
+
+%%% organization
+FUNCTION {format.organization}
+{ organization empty$
+    { "" }
+    { bst.organization.pre organization * bst.organization.post * }
+  if$
+}
+
+%% publisher and address
+FUNCTION {output.publisher.address}
+{ address empty$
+    { format.publisher "publisher" output.check.nocomma }
+    { bst.address.position #0 = 
+        { format.address output.nocomma
+          format.publisher "publisher" output.check.nocomma }
+        { format.publisher "publisher" output.check.nocomma
+          format.address output.nocomma }
+      if$
+    }
+  if$
+}
+
+%% address, organization, publisher
+FUNCTION {output.address.organization.publisher}
+{ address empty$
+    %% address is empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            'skip$
+            { format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            { format.organization "organization" output.check.nocomma }
+            { format.organization "organization" output.check.nocomma
+              format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+     if$
+    }
+    %% address is not empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            %% publisher is empty
+            { format.address output.nocomma }
+            %% publisher is not empty
+            { bst.address.position #0 =
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            %% publisher is empty
+            { format.organization "organization" output.check.nocomma
+              format.address output.nocomma }
+            %% publisher is not empty
+            { format.organization "organization" output.check.nocomma
+              bst.address.position #0 = 
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+     if$
+    }
+  if$
+}
+
+%%% misc
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+    'skip$
+    { pop$ " " type * }
+  if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+    { bst.techrep }
+    { " " type * }
+  if$
+  number empty$
+    { "t" change.case$ }
+    { number tie.or.space.connect }
+  if$
+}
+
+%%% phdthesis
+FUNCTION {format.phd}
+{ bst.phdthesis }
+
+%%% mastersthesis
+FUNCTION {format.mthesis}
+{ bst.mthesis }
+
+%%% school
+FUNCTION {format.school}
+{ school empty$
+    { "" }
+    { bst.school.pre school * bst.school.post * }
+  if$
+}
+
+%%% institution
+FUNCTION {format.institution}
+{ institution empty$
+    { "" }
+    { bst.institution.pre institution * bst.institution.post * }
+  if$
+}
+
+%%% remove first ? characters.
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+
+FUNCTION {format.note}
+{ note empty$
+    { "" }
+    { bst.note.pre note * bst.note.post * }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        \havarditem
+
+FUNCTION {output.bibitem}
+{ newline$
+  "\harvarditem[" write$
+  alabel write$                 % alabel <- abbreviated citation
+  "]{" write$
+  flabel write$                 % flabel <- full citation
+  "}{" write$
+  cyear write$
+  % cyear = year
+  "}{" write$
+  cite$ write$                  % cite$ -> pusch keyword
+  "}" write$
+  % If number index is on
+  bst.use.number.index #0 =
+     'skip$
+     { index #1 + 'index :=
+       "" 'preone :=
+       "" 'preten :=
+       bst.number.index.digit "1" =
+         'skip$
+         { bst.number.index.digit "2" =
+           { "\hskip0.5em" 'preone := }
+           { bst.number.index.digit "3" =
+              { "\hskip1em" 'preone :=
+                "\hskip0.5em" 'preten := }
+              'skip$
+             if$
+           }
+         if$
+         }
+       if$  
+     }
+  if$
+  newline$
+  before.all 'output.state :=
+  ""
+  % number index
+  bst.use.number.index #0 =
+     'skip$
+     { index #10 <
+         % Insert spaces according to digit of number index.
+         { preone }
+         { index #100 <
+             { preten }
+             { "" }
+           if$
+         }
+       if$
+       bst.number.index.pre * index int.to.str$ * bst.number.index.post * write$
+     }
+ if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        article
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.journal "journal" output.check.nocomma
+  bst.year.position #2 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+  format.vol.num.pages output.nocomma
+
+  bst.year.position #1 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        book
+
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check 
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  format.edition output.nocomma
+  format.book.pages output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        booklet
+
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output.nocomma
+  format.year output.nocomma
+  format.misc.title "title" output.check.nocomma
+  format.howpublished output.nocomma
+  format.address output.nocomma
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inbook
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+%   format.book remove.pre.comma "title" output.check.nocomma
+  format.book "title" output.check.nocomma
+  format.edition output.nocomma
+
+  format.bvolume output.nocomma
+  format.chapter.pages "chapter and pages" output.check.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       incollection
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.edition output.nocomma
+  format.chapter.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inproceedings
+
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  format.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       conference
+
+FUNCTION {conference}
+{ inproceedings }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       manual
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization empty$
+        'skip$
+        { organization output.nonnull.nocomma
+          address output.nocomma
+        }
+      if$
+    }
+    { format.authors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  author empty$
+    { organization empty$
+        { format.address new.block.check
+          format.address output.nocomma
+        }
+        'skip$
+      if$
+    }
+    { output.address.organization.publisher }
+  if$
+  format.edition output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       mastersthesis
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.mthesis format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       misc
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Online
+
+FUNCTION {online}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       phdthesis
+
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  format.phd
+  format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  address empty$
+    'skip$
+    { format.address output.nocomma }
+  if$
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       proceedings
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization output.nocomma }
+    { format.editors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.btitle remove.pre.comma "title" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       techreport
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.tr.number output.nonnull.nocomma
+  format.institution "institution" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       unpublished
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  bst.year.position #0 = not
+    { format.date remove.pre.comma output.nocomma }
+    { month empty$
+        'skip$
+        { format.month remove.pre.comma output.nocomma }
+      if$
+    }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note "note" output.check.nocomma
+  fin.entry
+}
+
+FUNCTION {default.type}
+{ misc }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Alias for month names:
+
+MACRO {jan} {"January"}
+MACRO {feb} {"February"}
+MACRO {mar} {"March"}
+MACRO {apr} {"April"}
+MACRO {may} {"May"}
+MACRO {jun} {"June"}
+MACRO {jul} {"July"}
+MACRO {aug} {"August"}
+MACRO {sep} {"September"}
+MACRO {oct} {"October"}
+MACRO {nov} {"November"}
+MACRO {dec} {"December"}
+
+%%% Read entries:
+READ
+
+%%% Variable for remembering the order of citation.
+INTEGERS { order.num }
+FUNCTION {initialize.order.num}
+{
+  #1 'order.num :=
+}
+%%% Initialize a variables
+EXECUTE {initialize.order.num}
+
+%%% Variable for remembering the order of citation.
+FUNCTION {set.order.cited}
+{
+  order.num 'order.cited :=
+  #1 order.num + 'order.num :=
+}
+%%% Iterate for all entries:
+ITERATE {set.order.cited}
+
+%%% check the value of nameorder field.
+FUNCTION {set.nameorder}
+{ nameorder empty$
+    { "" 'nameorder.temp := }
+    { nameorder 'nameorder.temp := }
+  if$
+}
+%%% Iterate for all entries:
+ITERATE {set.nameorder}
+
+%%% Remove symbols and convert to lowercase.
+FUNCTION {sortify}
+{ purify$ "l" change.case$ }
+
+%%% names for sorting
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { nameptr #1 >
+        { ", " * }
+        'skip$
+      if$
+      s nameptr "{ll}{ f}{ j}" format.name$ 't :=
+      nameptr numnames = t "others" = and
+        { bst.and.others.output *}
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.names.abb}
+{ 's :=
+  s num.names$ 'numnames :=
+  numnames bst.and.others.num <
+     { s sort.format.names }
+     { s #1 "{ll}{ f}{ j}" format.name$ " zz " * }
+  if$
+}
+
+%%% Label for full author name.
+FUNCTION {format.lab.names.full}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{vv~}{ll}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                  { bst.and.nameorder * t * }
+                  { ", " * t * }
+                if$
+              }
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 > 
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.ands * t * }
+                        if$
+                      }
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.and * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+  numnames #1 > #1 #2 = and {", eds" *} {} if$
+  numnames #1 = #1 #2 = and {", ed" *} {} if$
+}
+
+%%% laberl for abbreviated author name.
+FUNCTION {format.lab.names.abb}
+{ 's :=
+   s num.names$ 'numnames :=
+   numnames bst.and.others.num <
+     % if the number of authors is less than bst.and.others.num, full name.
+     { s format.lab.names.full }
+     % if the number of authors is equal or more than bst.and.others.num, abbreviated name.
+     { s #1 "{ll}" format.name$ bst.and.others.output * }
+   if$
+}
+
+%%% abbreviated author
+FUNCTION {author.key.label.abb}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.key.label.full}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {format.names.full.wo.and}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{ll}{, ff}{, jj}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { " " * t * }
+              { t "others" =
+                  { " " * }
+                  { numnames #2 > 
+                      { " " * t * }
+                      { " " * t * }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+}
+
+FUNCTION {author.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.editor.key.full.wo.and}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.names.full.wo.and }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {editor.key.organization.key.full.wo.and}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.key.organization.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+%%% abbreviated author
+FUNCTION {author.editor.key.label.abb}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.abb }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.editor.key.label.full}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.full }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.full}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.abb}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.full}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.full }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.abb}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.abb }
+  if$
+}
+
+%%% Convert numbers: 0->9, 1->8, 2->7,..., 9->0
+FUNCTION {reverse.num}
+{ 's :=
+  s "1" =
+    { "8" 'year.num := }
+    { s "2" =
+        { "7" 'year.num := }
+        { s "3" =
+            { "6" 'year.num := }
+            { s "4" =
+                { "5" 'year.num := }
+                { s "5" =
+                    { "4" 'year.num := }
+                    { s "6" =
+                        { "3" 'year.num := }
+                        { s "7" =
+                            { "2" 'year.num := }
+                            { s "8" =
+                                { "1" 'year.num := }
+                                { s "9" =
+                                    { "0" 'year.num := }
+                                    { s "0" =
+                                        { "9" 'year.num := }
+                                        { "9" 'year.num := }
+                                    if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+  year.num
+}
+
+%%% Convert year (large number -> small number)
+FUNCTION {convert.year}
+{ 't := 
+  bst.reverse.year #0 =
+    { t 'tt := }
+    { t #1 #1 substring$ reverse.num 
+      t #2 #1 substring$ reverse.num *
+      t #3 #1 substring$ reverse.num *
+      t #4 #1 substring$ reverse.num * 'tt := }
+  if$
+  tt
+}
+
+%%% cyear
+FUNCTION {calc.cyear}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.full.wo.and
+    { type$ "proceedings" =
+        'editor.key.organization.key.full.wo.and
+        { type$ "manual" =
+            'author.key.organization.key.full.wo.and
+            'author.key.full.wo.and
+          if$
+        }
+      if$
+    }
+  if$
+  duplicate$
+  year empty$
+    { "2199" 'cyear := }
+    { year 'cyear := }
+  if$
+  year empty$
+    { " " "2199" convert.year * field.or.null * }
+    { " " year convert.year * field.or.null * }
+  if$
+  sortify 'sort.label :=
+  % For debug
+  econ.debug #0 = not
+    { "sort.label = ``\texttt{" write$
+      sort.label write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+ pop$
+}
+
+FUNCTION {calc.sort.label.abb}
+{ author empty$
+    { editor empty$
+       { "" }
+       { editor 's := }
+      if$
+    }
+    { author 's := }
+  if$
+  s sort.format.names.abb 't :=
+  year empty$
+    { t sortify " " * "2199" convert.year * 'sort.label.abb := }
+    { t sortify " " * year convert.year * 'sort.label.abb := }
+  if$
+  econ.debug #0 = not
+    { "sort.label.abb = ``\texttt{" write$
+      sort.label.abb write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+  if$
+}
+
+%%% flabel
+FUNCTION {calc.flabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.full
+    { type$ "proceedings" =
+        'editor.key.organization.label.full
+        { type$ "manual" =
+            'author.key.organization.label.full
+            'author.key.label.full
+          if$
+        }
+      if$
+    }
+  if$
+  'flabel :=
+  author empty$
+    'skip$
+    { author num.names$ 'numnames :=
+      numnames bst.max.author.num >
+        { alabel 'flabel := }
+        'skip$
+      if$
+    }
+  if$
+  % For debug
+  econ.debug #0 = not
+    { "flabel = ``\texttt{" write$
+      flabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% alabel
+FUNCTION {calc.alabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.abb
+    { type$ "proceedings" =
+        'editor.key.organization.label.abb
+        { type$ "manual" =
+            'author.key.organization.label.abb
+            'author.key.label.abb
+          if$
+        }
+      if$
+    }
+  if$
+  'alabel :=
+  % For debug
+  econ.debug #0 = not
+    { "alabel = ``\texttt{" write$
+      alabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% title for sorting
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+
+%%% author for sorting
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+%%% editor for sorting
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+
+%%% 1,...,9 -> 001,...,009
+%%% 10,...,99 -> 010,...,099
+FUNCTION {add.zero.to.number}
+{ 's :=
+    s text.length$ #1 =
+      { "00" s * }
+      { s text.length$ #2 =
+          { "0" s * }
+          { s }
+        if$
+      }
+   if$
+}
+
+%% entry type
+FUNCTION {bst.sort.entry.type.order}
+{ 'item.type :=
+  item.type "article" =
+    { "01" }
+    { item.type "book" =
+        { "02" }
+        { item.type "booklet" =
+            { "03" }
+            { item.type "comment" =
+                { "04" }
+                { item.type "conference" =
+                    { "05" }
+                    { item.type "inbook" =
+                        { "06" }
+                        { item.type "incollection" =
+                            { "07" }
+                            { item.type "inproceedings" =
+                                { "08" }
+                                { item.type "manual" =
+                                    { "09" }
+                                    { item.type "masterthesis" =
+                                        { "10" }
+                                        { item.type "misc" =
+                                           { "11" }
+                                           { item.type "phdthesis" =
+                                              { "12" }
+                                              { item.type "proceedings" =
+                                                 { "13" }
+                                                 { item.type "techreport" =
+                                                    { "14" }
+                                                    { item.type "unpublished" =
+                                                       { "15" }
+                                                       { "16" }
+                                                      if$
+                                                    }
+                                                   if$
+                                                 }
+                                                if$
+                                              }
+                                             if$
+                                           }
+                                          if$
+                                        }
+                                      if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+}
+
+%%% Create sort.key$: absorder -> author -> year -> order -> month -> title.
+FUNCTION {presort.one}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " *
+  sort.label.abb *
+  " " *  
+  type$ "book" = type$ "inbook" = or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  * " " *
+  " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " * sort.label * " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% Codes for debugging
+FUNCTION {calc.alabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.alabel: alabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {calc.flabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.flabel: flabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {presort.one.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (1st time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (2nd time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.cyear.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.cyear: sort.label = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.sort.label.abb.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.sort.label.abb: sort.label.abb = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+%%% alabel
+EXECUTE {calc.alabel.mess}
+ITERATE {calc.alabel}
+
+%%% flabel
+EXECUTE {calc.flabel.mess}
+ITERATE {calc.flabel}
+
+%%% cyear and sort.label
+EXECUTE {calc.cyear.mess}
+ITERATE {calc.cyear}
+
+%%%
+EXECUTE {calc.sort.label.abb.mess}
+ITERATE {calc.sort.label.abb}
+
+%%% Sorting by $sort.key (first time)
+%
+% Sorting is done in two times. This is the first time.
+%
+EXECUTE {presort.one.mess}
+ITERATE {presort.one}
+SORT
+
+FUNCTION {forward.pass}
+{ bst.use.bysame #0 = bst.use.bysame #2 = or
+    % Not use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+    }
+    % Use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+      author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+      if$
+      'this.author :=
+      % format.names 'this.author :=
+      this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {reverse.pass}
+{ next.extra "b" =
+    { "a" 'extra.label := }
+    'skip$
+  if$
+  extra.label empty$ not
+    { cyear extra.label * }
+    { cyear "" * }
+  if$
+  "" field.or.null *
+  'cyear :=
+  extra.label 'next.extra :=
+}
+
+%%% \bysame
+ITERATE {forward.pass}
+
+REVERSE {reverse.pass}
+
+%%% Sorting by sort.key$ (second time)
+EXECUTE {presort.two.mess}
+ITERATE {presort.two}
+SORT
+
+FUNCTION {reset.prev.author}
+{ "xxyyzz" 'prev.author := }
+
+EXECUTE {reset.prev.author}
+
+FUNCTION {forward.pass.two}
+{ bst.use.bysame #1 = 
+    { author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+     if$
+     'this.author :=
+     this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+     if$
+    }
+   'skip$
+  if$
+}
+
+ITERATE {forward.pass.two}
+
+FUNCTION{punctuation}
+{
+  "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" write$ newline$
+  "%  This bbl file is created by " econ.file * " ver." * econ.version *          write$ newline$
+  "%  The latest " econ.file * " is available at " *			write$ newline$
+  "%  <https://github.com/ShiroTakeda/econ-bst>"                        write$ newline$ newline$
+}
+
+EXECUTE {punctuation}
+
+FUNCTION {begin.bib}
+{
+  preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  bst.use.bysame #0 =
+     % Not use \bysame.
+     'skip$
+     % Use \bysame.
+     { "%%% Definition of \bysame" write$ newline$
+       "\ifx\undefined\bysame" write$ newline$
+       "\newcommand{\bysame}{" bst.bysame.definition * "}" *
+       write$ newline$
+       "\fi" write$ newline$ newline$ }
+  if$
+  %% When number index is attached to the beginning of each item.
+  bst.use.number.index #0 =
+     'skip$
+     { bst.number.index.digit "1" =
+         % one digit.
+         { bst.number.index.bibhang.one }
+         { bst.number.index.digit "2" =
+            % two digits.
+            { bst.number.index.bibhang.ten }
+            % three or more digits.
+            { bst.number.index.bibhang.hund }
+           if$
+         }
+       if$
+       'hang :=
+       "%%% Redefinition of \bibhang" write$ newline$
+       "\ifx\undefined\bibhang" write$ newline$
+       "\relax" write$ newline$
+       "\else" write$ newline$
+       "\setlength{\bibhang}{"
+       hang * "}" * write$ newline$ 
+       "\fi" write$ newline$ newline$
+       }
+  if$
+  "\begin{thebibliography}{xxx}" write$ newline$
+
+  %% Initialize the variable `index'.
+  #0 'index :=
+}
+
+FUNCTION {end.bib}
+{ newline$ "\end{thebibliography}" write$ newline$ }
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+EXECUTE {end.bib}
+
+%  --------------------
+%  Local Variables:
+%  fill-column: 78
+%  mode: bst
+%  End:
diff --git a/Master/texmf-dist/bibtex/bst/econ-bst/econ-old.bst b/Master/texmf-dist/bibtex/bst/econ-bst/econ-old.bst
new file mode 100644
index 00000000000..e16c585fff1
--- /dev/null
+++ b/Master/texmf-dist/bibtex/bst/econ-bst/econ-old.bst
@@ -0,0 +1,3579 @@
+%% econ.bst: BibTeX style file for papers in economics.
+%
+% Author: Shiro Takeda
+% Maintainer: Shiro Takeda
+% Copyright (C) 2001-2018 Shiro Takeda
+% First-written:       <2007/07/28>
+% Version: 2.7
+% Keywords: TeX, BibTeX, bst 
+% URL: https://github.com/ShiroTakeda/econ-bst
+
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+% 
+% The Current Maintainer of this work is Shiro Takeda.
+
+%% Main features of econ.bst.
+
+% "econ.bst" is a BibTeX style file for economics. It provids the following
+% features:
+
+% 1) The author-year type citation (you need "natbib.sty" as well).
+% 2) Reference style used in economics papers ("econ.bst" is not a BibTeX style
+%    for a specific journal).
+% 3) Highly customizable.  You can easily customize reference style as you wish.
+% 4) You can use "certified random order" proposed by Ray ⓡ Robson (2018)
+%    (http://dx.doi.org/10.1257/aer.20161492).
+
+% Bug reports, requests and suggestions are welcome. 
+
+% For changelogs, see CHANGES.txt file.
+
+% version number
+FUNCTION {econ.version} { "2.7" }
+
+% File name
+FUNCTION {econ.file} { "econ.bst" }
+
+% Debug mode. Non-zero makes debug mode on.
+FUNCTION {econ.debug}
+{ #0 }    % Debug mode off (default).
+% { #1 }    % Debug mode on.
+
+ENTRY
+  %%% Declaration of field
+  { access address author booktitle chapter doi edition editor howpublished
+    institution journal key month note number organization pages publisher
+    school series title type url volume year
+  % Fields specific to econ.bst
+    order absorder nameorder
+  }
+
+  % Definition of entry variable.  The entry variable is a variable which has
+  % different values according to different entries.
+  %% Integer entry variable:
+  { order.cited }
+
+  %% String entry variable
+  { label cyear flabel alabel extra.label sort.label sort.label.abb
+    extra.label.bysame nameorder.temp jname }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Use \bysame or not.
+%
+% If set to #0, \bysame is not used.
+% If set to #1, \bysame is used 
+% If set to #2, \bysame is used (alternative abbreviation style).
+%
+% Note that integer number is expressed as # + integer in bst file.
+% \bysame is the function that abbreviates succession of the same authors' name by ---.
+%
+% See econ-sample.pdf for details.
+% 
+FUNCTION {bst.use.bysame}
+% { #0 }    % Not use \bysame
+{ #1 }    % -> Use \bysame (default)
+% { #2 }    % -> Use \bysame of alternative style.
+
+% The definition of \bysame command.
+%
+FUNCTION {bst.bysame.definition}
+{ "\hskip.3em \leavevmode\rule[.5ex]{3em}{.3pt}\hskip0.5em" } % (default)
+% { "\leavevmode\hbox to\leftmargin{\hrulefill\,\,}" } % If you set #2 to bst.use.bysame, use this.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% The order of fist and last name.
+%
+FUNCTION {bst.author.name}
+{ #0 }    % (default)
+% { #1 }
+% { #2 }
+
+% Case of #0: First author -> last-first, other authors -> first-last. 
+% Fujita, Masahisa, Paul R. Krugman, and Anthony J. Venables. 
+
+% Case of #1: All authors -> last-first
+% Fujita, Masahisa, Krugman, Paul R., and Venables, Anthony J.
+
+% Case of #2: All authors -> first-last
+% Masahisa Fujita, Paul R. Krugman, and Anthony J. Venables.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Abbreviate first name of authors (editors):
+%
+FUNCTION {bst.first.name.initial}
+{ #0 }    % #0 -> full letters (default).
+% { #1 }    % Non-zero -> initial letter only.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Decapitalize of strings in title field.
+%
+FUNCTION {bst.title.lower.case}
+{ #0 }    % If #0, not decapitalize title (default).
+% { #1 }    % If non-#0, decapitalize title
+
+% Hide title filed.
+%
+FUNCTION {bst.hide.title}
+{ #0 }    % #0 -> Title field is displayed (default)
+% { #1 }    % Non-zer -> Title field is hidden 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide month.
+%
+FUNCTION {bst.hide.month}
+{ #0 }    % #0 -> show month field (default).
+% { #1 }    % non-#0 -> hide month field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Attach number index like plain.bst.
+%
+FUNCTION {bst.use.number.index}
+{ #0 }    % Not use number index (default).
+% { #1 }    % Non-#0 -> Use number index
+
+% The string before number index:
+%
+FUNCTION {bst.number.index.pre}
+{ "[" }    % (default)
+
+% The string after number index.  Adjustment is recommended.
+%
+FUNCTION {bst.number.index.post}
+{ "]\hskip1.0em " }    % (default)
+
+% Maximum digit of number index:
+% If the number of reference items >= 100, set 3 to this function.
+% If the number of reference items < 100, set 2 to this function.
+% If the number of reference items < 10, set 1 to this function.
+%
+FUNCTION {bst.number.index.digit}
+{ "2" }    % (default)
+% { "3" }
+
+% The functions below are used to adjust space and postion.  If you use fonts
+% other than computer modern fonts, you had better make adjustments.
+%
+% Setting for bst.number.index.digit = 1:
+FUNCTION {bst.number.index.bibhang.one}
+{ "2.05em" }    % (default)
+% Setting for bst.number.index.digit = 2:
+FUNCTION {bst.number.index.bibhang.ten}
+{ "2.55em" }    % (default)
+% Setting for bst.number.index.digit = 3:
+FUNCTION {bst.number.index.bibhang.hund}
+{ "3.05em" }    % (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Position of "year":
+%
+% You can choose the position of year by this function.
+%
+% If set to #0, year is placed right after "author".
+% If set to non-zero, year is placed at the end (before note field) except for
+% aritcle type entry. 
+%
+% In article type entry, the position of year changes according to the
+% following rule:
+% 
+% #1 -> year is placed at the end.
+% #2 -> year is placed after journal name in aritcle type entry.
+% #3 -> year is placed after volume in aritcle type entry.
+%
+FUNCTION {bst.year.position}
+{ #0 }    % (default).
+% { #1 }    % Last place before note.
+% { #2 }    % After journal name for aticle type entry.
+% { #3 }    % After volume for aticle type entry.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If 0, references are sorted by old documents -> recent documents.  If
+% non-zero, reverse order.
+FUNCTION {bst.reverse.year}
+{ #0 }    % Normal order (old -> recent) (default).
+% { #1 }    % inverse order (recent -> old)
+
+% If non-zero, sort references by using year field as the primary key
+% (chronological sorting).
+FUNCTION {bst.sort.year}
+{ #0 }    % Normal case: year is used as the sorting key next to author (default).
+% { #1 }    % year is used as the primary sorting key.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% If non-zero, references are listed in citation order.
+%
+FUNCTION {bst.no.sort}
+{ #0 }    % (default)
+% { #1 }    % listed in citation order.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Non-zero -> sort references by entry type (article, book, incollection etc.)
+%
+FUNCTION {bst.sort.entry.type}
+{ #0 }    % #0 -> Normal (not sort references by entry type) (default).
+% { #1 }    % Non-zero -> sort references by entry type.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use absorder field to sort items.  Otherwise, ignore absorder field.
+%
+FUNCTION {bst.notuse.absorder.field}
+{ #0 }    % #0 -> Use absorder (default).
+% { #1 }    % Non-#0 -> Not use absorder.
+%
+% Order of priority to sort items
+% 
+% absorder -> author -> year -> order -> month -> title
+%
+% wehre absorder and order fields are specific to econ.bst.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% 0 -> use order field to sort items.  Otherwise, ignore order field.
+% Note: order field is specific to econ.bst.
+FUNCTION {bst.notuse.order.field}
+{ #0 }    % #0 -> Use order field (default).
+% { #1 }    % Non-#0 -> not use order field.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%     and
+
+%%% String used to separate author names in references.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in references (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.ands}
+{ ", and " }    % (default)
+
+%%% String used to separate author names in citation part.
+%
+% String replaced with _ in "Mr. A _ Mr. B "
+%
+FUNCTION {bst.cite.and}
+{ " and " }    % (default)
+
+%%% String used to separate author names in citation part (more than two authors).
+%
+% String replaced with _ in "Mr. A, Mr. B _ Mr. C"
+%
+FUNCTION {bst.cite.ands}
+{ " and " }    % (default)
+
+%%% If you want to use random author order for some bibliography entries, set
+% non-zero to this function.
+% 
+FUNCTION {bst.use.nameorder}
+{ #1 }	% Use random order (default)
+% { #0 }	% Not use random order
+
+%%% String used to separate author names in references for the entry of random
+% author order.
+%
+FUNCTION {bst.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+%%% String used to separate author names in citation part for the entry of
+% random author order
+%
+FUNCTION {bst.cite.and.nameorder}
+{ " \textcircled{r} " }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Author names in the citation part are abbreviated by et al. if the number of
+% authors is greater or equal to bst.and.others.num.
+FUNCTION {bst.and.others.num}
+{ #3 }    % If the number of authors is greater or equal to three (default).
+
+% If the number of authors is greater or equal to bst.max.author.num, only
+% first author is listed and other authors' names are abbreviated as "et al.".
+FUNCTION {bst.max.author.num}
+{ #12 }    % If the number of authors is greater or equal to 12 (default).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Strings used when abbreviating multiple-authors in citation part.
+FUNCTION {bst.and.others}
+{ " et~al." }    % (default)
+
+% Strings used when abbreviating multiple-authors in citation part for entries
+% with random author order.
+FUNCTION {bst.and.others.nameorder}
+{ " \textcircled{r}~al." }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       author 
+
+% The string before author:
+%
+FUNCTION {bst.author.pre}
+{ "" }    % (default)
+
+% The string after author:
+%
+FUNCTION {bst.author.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       year
+
+% The string before year only for aritcle type entry.
+%
+FUNCTION {bst.year.pre}
+{ " (" }    % (default)
+
+% The string after year only for aritcle type entry.
+%
+FUNCTION {bst.year.post}
+{ ") " }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.pre}
+{ " (" }    % (default)
+
+% The string after year for non-article type entry (book, incollection etc)
+%
+FUNCTION {bst.year.na.post}
+{ ") " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       title (except for title in book)
+
+% The string before title:
+%
+FUNCTION {bst.title.pre}
+{ "``" }    % (default)
+
+% The string after title:
+%
+FUNCTION {bst.title.post}
+{ ",''" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       tile for book:
+
+% The string before book title:
+%
+FUNCTION {bst.book.pre}
+{ " \textit{" }    % (default)
+
+% The string after book title:
+%
+FUNCTION {bst.book.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       booktitle
+
+% The string before booktitle:
+%
+FUNCTION {bst.btitle.pre}
+{ " \textit{" }    % (default)
+
+% The string after booktitle:
+%
+FUNCTION {bst.btitle.post}
+{ "}" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       journal name
+
+% The string before journal name:
+%
+FUNCTION {bst.journal.pre}
+{ " \textit{" }    % (default)
+
+% The string after journal name:
+%
+FUNCTION {bst.journal.post}
+{ "}" }    % (default)
+
+% Use the abbreviated journal name
+%
+% If set to #0, do not use abbreviated journal name.
+% If set to non-#0, use abbreviated journal name.
+%
+FUNCTION {bst.journal.name.abb}
+{ #0 }    % (default)
+% { #1 }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       editor notation:
+
+% The string that indicates multiple editors:
+%
+FUNCTION {bst.editors}
+{ " eds. " }    % (default)
+
+% The string that indicates single editor:
+%
+FUNCTION {bst.editor}
+{ " ed. " }    % (default)
+
+% Order of editor and booktitle in incollection and inproceedings entries.
+%
+% If set to #0: 	editors -> booktitle order
+% If set to non-zero:	booktitle -> editors order
+%
+FUNCTION {bst.editor.btitle.order}
+{ #0 }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       edition
+
+% The string before edition:
+%
+FUNCTION {bst.edition.pre}
+{ ", " }    % (default)
+
+% The string after edition:
+%
+FUNCTION {bst.edition.post}
+{ " edition" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       volume
+
+% The string before volume:
+%
+FUNCTION {bst.volume.pre}
+{ ", Vol. " }
+
+% The string after volume:
+%
+FUNCTION {bst.volume.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       number
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Hide number.  If non-zero, number is suppressed. 
+FUNCTION {bst.hide.number}
+{ #0 }    % #0 -> show number field (default)
+% { #1 }    % non-#0 -> Hide number field.
+
+% The string before number:
+%
+FUNCTION {bst.number.pre}
+{ ", No. " }
+
+% The string after number:
+%
+FUNCTION {bst.number.post}
+{ "" }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       in 
+
+% In
+%
+FUNCTION {bst.in}
+{ " in " }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       page
+
+% The string before page (multiple pages):
+%
+FUNCTION {bst.pages.pre}
+{ ", pp." }
+
+% The string before page:
+%
+FUNCTION {bst.page.pre}
+{ ", p." }
+
+% The string after page (multiple pages):
+%
+FUNCTION {bst.pages.post}
+{ "" }    % (default)
+
+% The string after page:
+%
+FUNCTION {bst.page.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       chapter
+
+% The string before chapter:
+%
+FUNCTION {bst.chapter.pre}
+{ ", Chap." }    % (default)
+
+% The string after chapter:
+%
+FUNCTION {bst.chapter.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       month
+
+% The string before month:
+%
+FUNCTION {bst.month.pre}
+{ ", " }    % (default)
+
+% The string after month:
+%
+FUNCTION {bst.month.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       address
+% The string before address:
+%
+FUNCTION {bst.address.pre}
+{ ", " }    % (default)
+
+% The string after address:
+%
+FUNCTION {bst.address.post}
+{ "" }    % (default)
+
+% You can choose the order of address and publisher by this function.
+%
+% If #0,	address -> publisher order (the default value).
+% If non-zero,	publisher -> address order.
+
+FUNCTION {bst.address.position}
+{ #0 }    % Address is placed before publisher (default)
+% { #1 }    % Address is placed after publisher 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       publisher
+
+% The string before publisher:
+%
+FUNCTION {bst.publisher.pre}
+{ ": " }    % (default)
+
+% The string after publisher:
+%
+FUNCTION {bst.publisher.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       series
+
+% The string before series:
+%
+FUNCTION {bst.series.pre}
+{ ", " }    % (default)
+
+% The string after series:
+%
+FUNCTION {bst.series.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       organization
+
+% The string before organization:
+%
+FUNCTION {bst.organization.pre}
+{ ", " }    % (default)
+
+% The string after organization:
+%
+FUNCTION {bst.organization.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       school
+
+% The string before school:
+%
+FUNCTION {bst.school.pre}
+{ ", " }    % (default)
+
+% The string after school:
+%
+FUNCTION {bst.school.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       institution
+
+% The string before institution:
+%
+FUNCTION {bst.institution.pre}
+{ ", " }    % (default)
+
+% The string after institution:
+%
+FUNCTION {bst.institution.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       howpublished
+
+% The string before howpublished:
+%
+FUNCTION {bst.howpublished.pre}
+{ " " }    % (default)
+
+% The string after howpublished:
+%
+FUNCTION {bst.howpublished.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       url
+
+% Show or Hide url.  If non-zero, url is displayed. Otherwise, url is suppressed. 
+FUNCTION {bst.show.url}
+{ #1 }    % non-#0 -> Show url field (default)
+% { #0 }    % #0 -> Not show url field.
+
+% The string before url:
+%
+FUNCTION {bst.url.pre}
+{ ", URL: \url{" }
+
+% The string after url:
+%
+FUNCTION {bst.url.post}
+{ "}" }    % (default)
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Access
+
+% This setting is valid only if there are "access" field in bib
+% files. The value of access field indicates accessed date for URL.
+
+% The string before access.
+FUNCTION {bst.access.pre}
+{ ", accessed on " } % (default)
+
+% The string after access.
+FUNCTION {bst.access.post}
+{ "" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       DOI (digital object identifier)
+
+% This setting is valid only if there are "doi" field in bib files.
+
+% Show or Hide DOI.  If non-zero, DOI is displayed. Otherwise, DOI is suppressed. 
+FUNCTION {bst.show.doi}
+{ #1 }    % non-#0 -> Show DOI field (default)
+% { #0 }    % #0 -> Not show DOI field.
+
+% The string before DOI:
+%
+FUNCTION {bst.doi.pre}
+{ ", DOI: \href{http://dx.doi.org/" doi * "}{\urlstyle{rm} \nolinkurl{" * }
+
+% The string after DOI:
+%
+FUNCTION {bst.doi.post}
+{ "}}" }	   % (default)
+
+% How to show URL and DOI fields when both fields exist.
+%
+% #0 -> Both fields are displayed
+% #1 -> Only URL field is displayed
+% #2 -> Only DOI field is displayed
+%
+FUNCTION {bst.url.doi}
+% { #0 }    % -> Both fields are displayed
+% { #1 }    % -> Only URL field is displayed
+{ #2 }    % (default) --> Only DOI field is displayed 
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Other functions:
+
+% The string before note.
+FUNCTION {bst.note.pre}
+{ ", " }    % (default)
+
+% The string after note.
+FUNCTION {bst.note.post}
+{ "" }    % (default)
+
+% The string that represents Technical report:
+%
+FUNCTION {bst.techrep}
+{ "Technical Report" }    % (default)
+
+% The string that represents master thesis:
+%
+FUNCTION {bst.mthesis}
+{ " Master's thesis" }    % (default)
+
+% The string that represents phd thesis:
+%
+FUNCTION {bst.phdthesis}
+{ " Ph.D. dissertation" }    % (default)
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%%      Functions for customization end here:
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+FUNCTION {bst.first}
+{ "1st" }
+
+FUNCTION {bst.second}
+{ "2nd" }
+
+FUNCTION {bst.third}
+{ "3rd" }
+
+FUNCTION {bst.fourth}
+{ "4th" }
+
+FUNCTION {bst.fifth}
+{ "5th" }
+
+FUNCTION {bst.st}
+{ "st" }
+
+FUNCTION {bst.nd}
+{ "nd" }
+
+FUNCTION {bst.rd}
+{ "rd" }
+
+FUNCTION {bst.th}
+{ "th" }
+
+%%%%% memo by Takeda
+
+% "a" 'b := indicates substituting string "a" for variable b.
+
+% Integer number #0, #1,...
+
+%%% Function definition:
+%
+% FUNCTION {name}
+% { 's :=
+%
+% }
+%
+% This is the definition of a function named "name".   The function "name" is
+% used in the following way 
+%
+% "foo" name
+% "foo" is an argument for the function "name".
+%
+% About the definition of a function with more than two arguments, see the
+% definition of "chop.word".
+
+%%% Declaration of variables:
+
+%% String global variables:
+STRINGS { s t tt }
+STRINGS { year.num }
+STRINGS { preone preten }
+STRINGS { last.sort.label next.extra prev.author prev.author.aer this.author }
+STRINGS { hang }
+STRINGS { item.type }
+STRINGS { tempa tempb }
+
+%% Integer global variables:
+INTEGERS { nameptr namesleft numnames name.num }
+INTEGERS { multiresult }
+INTEGERS { index }
+INTEGERS { len }
+INTEGERS { last.extra.num }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+INTEGERS { last.period.comma }
+INTEGERS { len1.aer len2.aer i.aer }
+
+%%% Definition of functions:
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+
+%%% Initialize variables:
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+
+%%% Remove comma and add period:
+%
+%%%
+FUNCTION {add.period.x}
+{ duplicate$
+  #-1 #1 substring$ "," =
+    { #-2 global.max$ substring$ "." * }
+    { duplicate$
+      #-1 #2 substring$ ". " =
+        { #-3 global.max$ substring$ "." * }
+        { duplicate$
+          #-1 #2 substring$ ", " =
+            { #-3 global.max$ substring$ "." * }
+            { duplicate$
+              #-1 #2 substring$ ",'" =
+                { #-3 global.max$ substring$ ".'" * }
+                { duplicate$
+                  #-1 #2 substring$ ".'" =
+                    { #-3 global.max$ substring$ ".'" * }
+                    { duplicate$
+                      #-1 #2 substring$ ".~" =
+                        { #-3 global.max$ substring$ ".~" * }
+                        { duplicate$
+                          #-1 #2 substring$ ",~" =
+                            { #-3 global.max$ substring$ ".~" * }
+                            { duplicate$
+                              #-1 #3 substring$ ",''" =
+                                { #-4 global.max$ substring$ ".''" * }
+                                { duplicate$
+                                  #-1 #3 substring$ ".''" =
+                                    { #-4 global.max$ substring$ ".''" * }
+                                    { add.period$ }
+                                  if$
+                                }
+                              if$
+                            }
+                          if$
+                        }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {output.nonnull}
+{ 's :=
+  % mid.sentence
+  output.state mid.sentence =
+    { ", " * write$ }
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period.x " " * write$ }
+          if$
+        }
+      if$
+      % not mid.sentence, set to mid.sentence
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+
+%%% If the last character is period or comma, set non-zero to
+%%% last.period.comma.
+FUNCTION {period.comma.p}
+{ duplicate$ 't :=
+  t #-1 #1 substring$ "." = 
+  t #-1 #1 substring$ "," = or
+  t #-1 #1 substring$ ":" = or 
+  t #-1 #2 substring$ ".'" = or
+  t #-1 #2 substring$ ",'" = or
+  t #-1 #3 substring$ ".''" = or
+  t #-1 #3 substring$ ",''" = or
+  t #-1 #2 substring$ ".~" = or
+  t #-1 #2 substring$ ",~" = or
+    { #1 'last.period.comma := }
+    { #0 'last.period.comma := }
+  if$
+}
+
+%%% remove unnecessary comma.
+FUNCTION {remove.pre.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #1 #1 substring$ "," = 
+       { s #2 global.max$ substring$ }
+       { s #1 #1 substring$ "." = 
+          { s #2 global.max$ substring$ }
+          's
+         if$
+       }
+      if$
+    }
+  if$
+}
+
+%%% output.nonnull.nocomma is the same as output.nonnull except that it does
+%%% not add commas even in mid.sentence.
+FUNCTION {output.nonnull.nocomma}
+{ 's :=
+  output.state mid.sentence =
+    % mid.sentence
+    { period.comma.p "" * write$ }
+
+    % not mid.sentence
+    { output.state after.block =
+        % after.block
+        { add.period.x " " * write$ }
+        % before.all
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  last.period.comma #0 =
+    { s }
+    { s remove.pre.comma }
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output}
+% { duplicate$ empty$
+%     'pop$
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.nocomma}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull.nocomma
+  if$
+}
+
+% Not used in the current econ.bst.
+% FUNCTION {output.check}
+% { 't :=
+%   duplicate$ empty$
+%     { pop$ "empty " t * " in " * cite$ * warning$ }
+%     'output.nonnull
+%   if$
+% }
+
+FUNCTION {output.check.nocomma}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull.nocomma
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Format in bbl file:
+
+% \harvarditem[Brezis et~al.]{Brezis, Krugman and
+%   Tsiddon}{1993}{brezis93:_leapf_inter_compet}
+% Brezis, Elise~S., Paul~R. Krugman, and Daniel Tsiddon  (1993) ``Leapfrogging in
+%   International Competition: A Theory of Cycles in National Technological
+%   Leadership.'', {\em American Economic Review.}, Vol.~83. No.~5. pp.
+%   1211--1219.
+
+% \harvarditem[abbreviated citation]{full citation}{year}{keyword} ...
+
+%%% Add period and newline.
+FUNCTION {fin.entry}
+{ add.period.x
+  write$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+
+FUNCTION {new.block.check}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+
+%%% booktitle
+FUNCTION {format.btitle}
+{ booktitle empty$
+    { "" }
+    { bst.btitle.pre booktitle * bst.btitle.post * }
+  if$
+}
+
+FUNCTION {journal.name.sub}
+{ 't :=
+  t #1 #4 substring$ "The " =
+    % Use #30 to handle with the long journal name.
+    { t #5 #30 substring$ 't := }
+    'skip$
+  if$
+  t
+}
+
+FUNCTION {format.journal.name.abb}
+{ journal 's :=
+  journal 'jname :=
+  s journal.name.sub 's :=
+  bst.journal.name.abb #0 =
+    'skip$
+    { 
+       s "Academic Management Review" =
+        { "Acad. Manage. J." 'jname := }
+        'skip$
+      if$
+    }
+  if$
+  jname
+}
+
+%%% journal
+FUNCTION {format.journal}
+{ journal empty$
+    { "" }
+    { bst.journal.pre format.journal.name.abb * bst.journal.post * }
+  if$
+}
+
+%%% title for book
+FUNCTION {format.book}
+{ title empty$
+    { "" }
+    { bst.book.pre title * bst.book.post * }
+  if$
+}
+
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+    { type$ "online" = bst.show.url or
+        { bst.url.pre url * bst.url.post *
+          access empty$
+             { "" * }
+             { bst.access.pre * access * bst.access.post * }
+          if$
+        }
+        { "" }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.doi}
+{ doi empty$ bst.show.doi not or
+    { "" }
+    { bst.doi.pre doi * bst.doi.post * }
+  if$
+}
+
+FUNCTION {format.url.doi}
+{ url empty$
+    { format.doi }
+    { doi empty$
+        { format.url }
+        { bst.url.doi #0 =
+            { format.url output.nocomma
+              format.doi }
+            { bst.url.doi #1 =
+                { format.url } 
+                { format.doi }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% and others
+FUNCTION {bst.and.others.output}
+{ nameorder.temp "random" =
+  bst.use.nameorder #0 = not and
+    { bst.and.others.nameorder }
+    { bst.and.others }
+  if$
+}
+
+%%% author and editor
+
+%%% name
+FUNCTION {format.names}
+{ 's :=
+  % insert 1 to nameptr.
+  #1 'nameptr :=
+  % Set the number of authors to numnames.
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  % Repeat if namesleft > 0
+  { namesleft #0 > }
+
+  { nameptr #1 =
+      % First author
+      { bst.author.name #0 =
+        bst.author.name #1 =
+        or
+           { bst.first.name.initial #0 = 
+            { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+            { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+           if$
+         }
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+           if$
+         }
+        if$
+      }
+      % The second or later authors
+      { bst.author.name #0 =
+        bst.author.name #2 =
+        or
+           { bst.first.name.initial #0 = 
+              { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't := }
+              { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't := }
+             if$
+           }
+           { bst.first.name.initial #0 = 
+                { s nameptr "{vv~}{ll}{, ff}{, jj}" format.name$ 't := }
+                { s nameptr "{vv~}{ll}{, f.}{, jj}" format.name$ 't := }
+             if$
+           }
+        if$
+      }
+    if$
+    
+    nameptr #1 >
+      % The second or later authors
+      { numnames bst.max.author.num >
+          { bst.and.others * 
+            #1 'namesleft :=  }
+          { nameorder.temp "random" =
+            bst.use.nameorder #0 = not and
+              { bst.and.nameorder * t * }
+              { namesleft #1 >
+                  % More than one authors left
+                  { ", " * t * }
+                  % Only one author left
+                  { t "others" =
+                      { bst.and.others.output * }
+                      { numnames #2 =
+                          % Entry with two authors
+                          { bst.and * t * }
+                          { bst.ands * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }
+            if$
+          }
+        if$
+      }
+      't
+    if$
+    nameptr #1 + 'nameptr :=
+    namesleft #1 - 'namesleft :=
+  }
+  while$
+}
+
+% remove successive periods (commas) from author
+FUNCTION {remove.ss.period.auth}
+{ 's :=
+  s format.names 'tempa :=
+  bst.author.post 'tempb :=
+  tempb #1 #1 substring$ "}" =
+    { tempa tempb * }
+    { tempa #-1 #1 substring$ tempb #1 #1 substring$ = 
+        { tempa tempb #2 global.max$ substring$ * }
+        { tempa tempb * }
+      if$
+    }
+  if$
+}
+
+% <prev name list> <new name list> compare.names <modified name list>
+FUNCTION {compare.names.aer}
+{ 's :=
+  'tempa :=
+
+%   "current.author = " s * "\\" * write$ newline$
+%   "prev.author = " tempa * "\\" * write$ newline$
+
+  tempa num.names$ 'len1.aer :=  % len1 = the number of previous authors
+  s num.names$ 'len2.aer :=         % len2 = the number of current authors
+
+% len1.aer := min(len1.aer,len2.aer)
+% len1 -> min{ the number of previous authors, the number of current authors }
+  len1.aer len2.aer >
+    { len2.aer 'len1.aer := }
+    { }
+  if$
+
+% start with an empty string, then while the components are the same
+% add "\bysame"
+  ""
+  #1 'i.aer :=
+
+  { i.aer len1.aer > not }
+    { tempa i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$
+      =
+        { #1 i.aer <
+            { " and " * }       % \bysame で省略する著者の前につく and 
+            { }
+          if$
+          "\bysame{}" *
+          i.aer #1 + 'i.aer := } 
+        { #-1 'len1.aer := }
+      if$
+    }
+  while$
+
+% add the rest of the second string
+  { i.aer len2.aer > not }
+    { #1 i.aer <
+        { " and " * }
+        { }
+      if$
+      s i.aer "{ff }{vv }{ll}{ jj}" format.name$ *
+      i.aer #1 + 'i.aer :=
+    }
+  while$
+}
+
+%%% author
+FUNCTION {format.authors}
+{ author empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer author compare.names.aer 's :=
+          author 'prev.author.aer := }
+        { author 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors}
+{ editor empty$
+    { "" }
+    { bst.use.bysame #2 =
+        { prev.author.aer editor compare.names.aer 's :=
+          editor 'prev.author.aer := }
+        { editor 's := }
+      if$
+      extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre s remove.ss.period.auth * }
+      if$
+      s num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.authors.alt}
+{ author empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        {"\bysame "}
+        { bst.author.pre author remove.ss.period.auth * }
+      if$
+    }
+  if$
+}
+
+%%% editor
+FUNCTION {format.editors.alt}
+{ editor empty$
+    { "" }
+    { extra.label.bysame "bysame" =
+        { "\bysame " }
+        { bst.author.pre editor remove.ss.period.auth * }
+      if$
+      editor num.names$ #1 >
+       { bst.editors * }
+       { bst.editor * }
+      if$
+    }
+  if$
+}
+
+%%% format.in.ed.booktitle
+FUNCTION {format.editors.x}
+{ editor empty$
+    { "" }
+    { bst.editor.btitle.order #0 =
+        { "" }
+        { editor num.names$ #1 >
+           { bst.editors " by " * }
+           { bst.editor  " by " * }
+          if$
+        }
+      if$
+      editor format.names *
+      bst.editor.btitle.order #0 =
+        { editor num.names$ #1 >
+           { bst.editors * }
+           { bst.editor * }
+          if$
+        }
+        { "" * }
+      if$
+    }
+  if$
+}
+
+%%% Remove commas in the cases like "?." and "?,".
+FUNCTION {remove.irrelevant.period.comma}
+{ 's :=
+  s empty$
+    { "" }
+    { s #-1 #3 substring$ "?,'" =
+      s #-1 #3 substring$ "?.'" = or
+        { s #-3 global.max$ substring$ "'" * }
+        { s #-1 #4 substring$ "?,''" =
+          s #-1 #4 substring$ "?.''" = or
+            { s #-4 global.max$ substring$ "''" * }
+            { s #-1 #2 substring$ "?," =
+              s #-1 #2 substring$ "?." = or
+                { s #-2 global.max$ substring$ "" * }
+                { s #-1 #3 substring$ "?,~" =
+                  s #-1 #3 substring$ "?.~" = or
+                    { s #-4 global.max$ substring$ "?~" * }
+                    's
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% title
+FUNCTION {format.title.sub}
+{ bst.title.lower.case #0 =
+     { bst.title.pre title * bst.title.post * }
+     { bst.title.pre title "t" change.case$ * bst.title.post * }
+  if$
+}
+
+%%% title
+FUNCTION {format.title}
+{ title empty$
+  bst.hide.title #0 = not or
+    { "" }
+    { format.title.sub remove.irrelevant.period.comma }
+  if$
+}
+
+%%% title for misc.
+FUNCTION {format.misc.title}
+{ title empty$
+    { "" }
+    { bst.title.pre title * bst.title.post * }
+  if$
+}
+
+% Convert "-" to "--" (for pages field)
+FUNCTION {n.dashify}
+{ 't :=
+  ""
+  %% while$
+  { t empty$ not }
+  { t #1 #1 substring$ "-" =
+      { t #1 #2 substring$ "--" = not
+          { "--" *
+            t #2 global.max$ substring$ 't :=
+          }
+          { { t #1 #1 substring$ "-" = }
+            { "-" *
+              t #2 global.max$ substring$ 't :=
+            }
+            while$
+          }
+        if$
+      }
+      { t #1 #1 substring$ *
+       t #2 global.max$ substring$ 't :=
+      }
+    if$
+  }
+  while$
+}
+
+%%% year
+FUNCTION {format.year}
+{ year empty$
+    { "there's no year in " cite$ * warning$
+      ", " }
+    { type$ "article" =
+        { bst.year.pre year * extra.label * bst.year.post * }
+        { bst.year.na.pre year * extra.label * bst.year.na.post * }
+      if$
+    }
+  if$
+}
+
+%%% page for book
+FUNCTION {format.book.pages}
+{ pages empty$
+    { "" }
+    { bst.pages.pre pages * bst.pages.post * }
+  if$
+}
+
+%%% Attach tie for the string with two or less characters.
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+    { "~" }
+    { " " }
+  if$
+  swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+
+%%% volume for book
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+    { bst.volume.pre volume * bst.volume.post *
+      series empty$
+        'skip$
+        %% If there is series field
+        { " of " * series * bst.series.post * }
+      if$
+%       "volume and number" number either.or.check
+    }
+  if$
+}
+
+%%% series
+FUNCTION {output.series}
+{ series empty$
+    { "" }
+    { bst.series.pre series * bst.series.post * }
+ if$
+}
+
+%%% number and series
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+      bst.hide.month #0 = not or
+        % number is empty
+        { series empty$
+            { "" }
+            % series is not empty.
+            { output.series }
+          if$
+        }
+        % number is not empty$
+        { series empty$
+            { bst.number.pre number * bst.number.post * }
+            % series is not empty.
+            { bst.in bst.series.pre * series * bst.series.post *
+              bst.number.pre * number * bst.number.post * }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+%%% Number or not.
+FUNCTION {is.num}
+{ chr.to.int$
+  duplicate$ "0" chr.to.int$ < not
+  swap$ "9" chr.to.int$ > not and
+}
+
+FUNCTION {extract.num}
+{ duplicate$ 't :=
+  "" 's :=
+  { t empty$ not }
+  { t #1 #1 substring$
+    t #2 global.max$ substring$ 't :=
+    duplicate$ is.num
+      { s swap$ * 's := }
+      { pop$ "" 't := }
+    if$
+  }
+  while$
+  s empty$
+    'skip$
+    { pop$ s }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%      edition
+
+% Convert edition to 1st, 2nd, 3rd, 4th etc
+FUNCTION {eng.ord}
+{ duplicate$ "1" swap$ *
+  #-2 #1 substring$ "1" =
+     { bst.th * }
+     { duplicate$ #-1 #1 substring$
+       duplicate$ "1" =
+         { pop$ bst.st * }
+         { duplicate$ "2" =
+             { pop$ bst.nd * }
+             { "3" =
+                 { bst.rd * }
+                 { bst.th * }
+               if$
+             }
+           if$
+          }
+       if$
+     }
+   if$
+}
+
+% Convert first, second etc in edition field to 1st, 2nd (from jfm.bst)
+FUNCTION {convert.edition}
+{ edition extract.num "l" change.case$ 's :=
+  s "first" = s "1" = or
+    { bst.first }
+    { s "second" = s "2" = or
+        { bst.second }
+        { s "third" = s "3" = or
+            { bst.third }
+            { s "fourth" = s "4" = or
+                { bst.fourth }
+                { s "fifth" = s "5" = or
+                    { bst.fifth }
+                    { s #1 #1 substring$ is.num
+                        { s eng.ord }
+                        { edition }
+                      if$
+                    }
+                  if$
+                }
+              if$
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% edition
+FUNCTION {format.edition}
+{ edition empty$
+    { "" }
+    { output.state mid.sentence =
+        { bst.edition.pre convert.edition "l" change.case$ * bst.edition.post * }
+        { bst.edition.pre convert.edition "t" change.case$ * bst.edition.post * }
+      if$
+    }
+  if$
+}
+
+%%% month
+FUNCTION {format.month}
+{ month empty$
+  bst.hide.month #0 = not or
+    { "" }
+    { bst.month.pre month * bst.month.post * }
+  if$
+}
+
+%%% year and month
+FUNCTION {format.date}
+{ format.month format.year *
+}
+
+%%% Is multiple pages like 1-100?
+FUNCTION { multi.page.check }
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+
+%%% pages
+FUNCTION {format.pages}
+{ pages empty$
+    { "" }
+    { pages multi.page.check
+      { bst.pages.pre pages n.dashify tie.or.space.connect * bst.pages.post }
+      { bst.page.pre pages tie.or.space.connect * bst.page.post }
+     if$
+    }
+ if$
+}
+
+%%% number
+FUNCTION {format.number}
+{ number empty$
+  bst.hide.number #0 = not or
+    { "" }
+    { bst.number.pre number * bst.number.post * }
+  if$
+}
+
+%%% volume
+FUNCTION {format.volume}
+{ volume empty$
+    'skip$
+    { bst.volume.pre volume * bst.volume.post *
+      bst.year.position #3 =
+        { format.year * }
+        'skip$
+      if$
+    }
+  if$
+}
+
+%%% number, page
+FUNCTION {format.number.pages}
+{ number empty$
+    { format.pages }
+    { format.number format.pages * }
+  if$
+}
+
+%%% volume, page
+FUNCTION {format.volume.pages}
+{ volume empty$
+    { format.pages }
+    { format.volume format.pages * }
+  if$
+}
+
+%%% volume, number, page
+FUNCTION {format.volume.number.pages}
+{ volume empty$
+    { number empty$
+        { format.pages }
+        { format.number format.pages * }
+      if$
+    }
+    { number empty$
+        { format.volume format.pages * }
+        { format.volume format.number * format.pages * }
+      if$
+    }
+  if$
+}
+
+% volume, number, page
+FUNCTION {format.vol.num.pages}
+{ volume empty$
+    %% volume is empty.
+    { number empty$
+        %% number is empty.
+        { pages empty$
+            % warning
+            { "there is no volume, number, and pages in " cite$ * warning$ "" } 
+            { "" format.pages * }
+         if$
+        }
+        %% number is not empty.
+        % warning
+        { "there's a number but no volume in " cite$ * warning$
+          format.number.pages }
+     if$
+    }
+    %% volume is not empty.
+    { number empty$
+        %% number is empty.
+        { format.volume.pages }
+        %% number is not empty.
+        { format.volume.number.pages }
+     if$
+    }
+  if$
+}
+
+%%% chapter
+FUNCTION {format.chapter}
+{ chapter empty$
+    { "" }
+    { type empty$
+        { bst.chapter.pre chapter tie.or.space.connect * bst.chapter.post }
+        { ", " * type " " * chapter * }
+      if$
+    }
+  if$
+}
+
+%%% chapter, pages
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    { pages empty$
+        { "" }
+        { "" format.pages * }
+      if$
+    }
+    { pages empty$
+        { "" format.chapter * }
+        { "" format.chapter * format.pages * }
+      if$
+    }
+  if$
+}
+
+%%% editor and booktitle
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+    { "" }
+    { editor empty$
+        { bst.in format.btitle * }
+        { bst.editor.btitle.order #0 =
+            { bst.in format.editors.x * " " * format.btitle * }
+            { bst.in format.btitle * " " * format.editors.x * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+
+%%% howpublished
+FUNCTION {format.howpublished}
+{ howpublished empty$
+    { "" }
+    { bst.howpublished.pre howpublished * bst.howpublished.post * }
+  if$
+}
+
+%%% address
+FUNCTION {format.address}
+{ address empty$
+    { "" }
+    { bst.address.pre address * bst.address.post * }
+  if$
+}
+
+%%% publisher
+FUNCTION {format.publisher}
+{ publisher empty$
+    { "" }
+    { bst.publisher.pre publisher * bst.publisher.post * }
+  if$
+}
+
+%%% organization
+FUNCTION {format.organization}
+{ organization empty$
+    { "" }
+    { bst.organization.pre organization * bst.organization.post * }
+  if$
+}
+
+%% publisher and address
+FUNCTION {output.publisher.address}
+{ address empty$
+    { format.publisher "publisher" output.check.nocomma }
+    { bst.address.position #0 = 
+        { format.address output.nocomma
+          format.publisher "publisher" output.check.nocomma }
+        { format.publisher "publisher" output.check.nocomma
+          format.address output.nocomma }
+      if$
+    }
+  if$
+}
+
+%% address, organization, publisher
+FUNCTION {output.address.organization.publisher}
+{ address empty$
+    %% address is empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            'skip$
+            { format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            { format.organization "organization" output.check.nocomma }
+            { format.organization "organization" output.check.nocomma
+              format.publisher "publisher" output.check.nocomma }
+          if$
+        }
+     if$
+    }
+    %% address is not empty
+    { organization empty$
+        %% organization is empty
+        { publisher empty$
+            %% publisher is empty
+            { format.address output.nocomma }
+            %% publisher is not empty
+            { bst.address.position #0 =
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+        %% organization is not empty
+        { publisher empty$
+            %% publisher is empty
+            { format.organization "organization" output.check.nocomma
+              format.address output.nocomma }
+            %% publisher is not empty
+            { format.organization "organization" output.check.nocomma
+              bst.address.position #0 = 
+                { format.address output.nocomma
+                  format.publisher "publisher" output.check.nocomma }
+                { format.publisher "publisher" output.check.nocomma
+                  format.address output.nocomma }
+              if$
+            }
+         if$
+        }
+     if$
+    }
+  if$
+}
+
+%%% misc
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+    'skip$
+    { pop$ " " type * }
+  if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+    { bst.techrep }
+    { " " type * }
+  if$
+  number empty$
+    { "t" change.case$ }
+    { number tie.or.space.connect }
+  if$
+}
+
+%%% phdthesis
+FUNCTION {format.phd}
+{ bst.phdthesis }
+
+%%% mastersthesis
+FUNCTION {format.mthesis}
+{ bst.mthesis }
+
+%%% school
+FUNCTION {format.school}
+{ school empty$
+    { "" }
+    { bst.school.pre school * bst.school.post * }
+  if$
+}
+
+%%% institution
+FUNCTION {format.institution}
+{ institution empty$
+    { "" }
+    { bst.institution.pre institution * bst.institution.post * }
+  if$
+}
+
+%%% remove first ? characters.
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+
+FUNCTION {format.note}
+{ note empty$
+    { "" }
+    { bst.note.pre note * bst.note.post * }
+  if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        \havarditem
+
+FUNCTION {output.bibitem}
+{ newline$
+  "\harvarditem[" write$
+  alabel write$                 % alabel <- abbreviated citation
+  "]{" write$
+  flabel write$                 % flabel <- full citation
+  "}{" write$
+  cyear write$
+  % cyear = year
+  "}{" write$
+  cite$ write$                  % cite$ -> pusch keyword
+  "}" write$
+  % If number index is on
+  bst.use.number.index #0 =
+     'skip$
+     { index #1 + 'index :=
+       "" 'preone :=
+       "" 'preten :=
+       bst.number.index.digit "1" =
+         'skip$
+         { bst.number.index.digit "2" =
+           { "\hskip0.5em" 'preone := }
+           { bst.number.index.digit "3" =
+              { "\hskip1em" 'preone :=
+                "\hskip0.5em" 'preten := }
+              'skip$
+             if$
+           }
+         if$
+         }
+       if$  
+     }
+  if$
+  newline$
+  before.all 'output.state :=
+  ""
+  % number index
+  bst.use.number.index #0 =
+     'skip$
+     { index #10 <
+         % Insert spaces according to digit of number index.
+         { preone }
+         { index #100 <
+             { preten }
+             { "" }
+           if$
+         }
+       if$
+       bst.number.index.pre * index int.to.str$ * bst.number.index.post * write$
+     }
+ if$
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        article
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.journal "journal" output.check.nocomma
+  bst.year.position #2 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+  format.vol.num.pages output.nocomma
+
+  bst.year.position #1 =
+    { format.date output.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        book
+
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check 
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  format.edition output.nocomma
+  format.book.pages output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%        booklet
+
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output.nocomma
+  format.year output.nocomma
+  format.misc.title "title" output.check.nocomma
+  format.howpublished output.nocomma
+  format.address output.nocomma
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inbook
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check.nocomma }
+    { format.authors output.nonnull.nocomma
+      "author and editor" editor either.or.check
+    }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+%   format.book remove.pre.comma "title" output.check.nocomma
+  format.book "title" output.check.nocomma
+  format.edition output.nocomma
+
+  format.bvolume output.nocomma
+  format.chapter.pages "chapter and pages" output.check.nocomma
+  format.number.series output.nocomma
+  output.publisher.address
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       incollection
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.edition output.nocomma
+  format.chapter.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       inproceedings
+
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  format.in.ed.booktitle "booktitle" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  format.pages output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       conference
+
+FUNCTION {conference}
+{ inproceedings }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       manual
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization empty$
+        'skip$
+        { organization output.nonnull.nocomma
+          address output.nocomma
+        }
+      if$
+    }
+    { format.authors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  author empty$
+    { organization empty$
+        { format.address new.block.check
+          format.address output.nocomma
+        }
+        'skip$
+      if$
+    }
+    { output.address.organization.publisher }
+  if$
+  format.edition output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       mastersthesis
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.mthesis format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       misc
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Online
+
+FUNCTION {online}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.misc.title output.nocomma
+  format.howpublished output.nocomma
+
+  bst.year.position #0 = not
+    { format.date output.nocomma }
+    { format.month output.nocomma }
+  if$
+
+  format.url.doi output.nocomma
+  
+  format.note output.nocomma
+  fin.entry
+  empty.misc.check
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       phdthesis
+
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.book "title" output.check.nocomma
+  format.phd
+  format.thesis.type output.nonnull.nocomma
+  format.school "school" output.check.nocomma
+  address empty$
+    'skip$
+    { format.address output.nocomma }
+  if$
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       proceedings
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization output.nocomma }
+    { format.editors output.nonnull.nocomma }
+  if$
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.btitle remove.pre.comma "title" output.check.nocomma
+  format.bvolume output.nocomma
+  format.number.series output.nocomma
+  output.address.organization.publisher
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       techreport
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+  format.tr.number output.nonnull.nocomma
+  format.institution "institution" output.check.nocomma
+  format.address output.nocomma
+
+  bst.year.position #0 = not
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note output.nocomma
+  fin.entry
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       unpublished
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check.nocomma
+  bst.year.position #0 =
+    { format.year "year" output.check.nocomma }
+    'skip$
+  if$
+  format.title "title" output.check.nocomma
+
+  bst.year.position #0 = not
+    { format.date remove.pre.comma output.nocomma }
+    { month empty$
+        'skip$
+        { format.month remove.pre.comma output.nocomma }
+      if$
+    }
+  if$
+
+  format.url.doi output.nocomma
+
+  format.note "note" output.check.nocomma
+  fin.entry
+}
+
+FUNCTION {default.type}
+{ misc }
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%       Alias for month names:
+
+MACRO {jan} {"January"}
+MACRO {feb} {"February"}
+MACRO {mar} {"March"}
+MACRO {apr} {"April"}
+MACRO {may} {"May"}
+MACRO {jun} {"June"}
+MACRO {jul} {"July"}
+MACRO {aug} {"August"}
+MACRO {sep} {"September"}
+MACRO {oct} {"October"}
+MACRO {nov} {"November"}
+MACRO {dec} {"December"}
+
+%%% Read entries:
+READ
+
+%%% Variable for remembering the order of citation.
+INTEGERS { order.num }
+FUNCTION {initialize.order.num}
+{
+  #1 'order.num :=
+}
+%%% Initialize a variables
+EXECUTE {initialize.order.num}
+
+%%% Variable for remembering the order of citation.
+FUNCTION {set.order.cited}
+{
+  order.num 'order.cited :=
+  #1 order.num + 'order.num :=
+}
+%%% Iterate for all entries:
+ITERATE {set.order.cited}
+
+%%% check the value of nameorder field.
+FUNCTION {set.nameorder}
+{ nameorder empty$
+    { "" 'nameorder.temp := }
+    { nameorder 'nameorder.temp := }
+  if$
+}
+%%% Iterate for all entries:
+ITERATE {set.nameorder}
+
+%%% Remove symbols and convert to lowercase.
+FUNCTION {sortify}
+{ purify$ "l" change.case$ }
+
+%%% names for sorting
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { nameptr #1 >
+        { ", " * }
+        'skip$
+      if$
+      s nameptr "{ll}{ f}{ j}" format.name$ 't :=
+      nameptr numnames = t "others" = and
+        { bst.and.others.output *}
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.names.abb}
+{ 's :=
+  s num.names$ 'numnames :=
+  numnames bst.and.others.num <
+     { s sort.format.names }
+     { s #1 "{ll}{ f}{ j}" format.name$ " zz " * }
+  if$
+}
+
+%%% Label for full author name.
+FUNCTION {format.lab.names.full}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{vv~}{ll}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                  { bst.and.nameorder * t * }
+                  { ", " * t * }
+                if$
+              }
+              { t "others" =
+                  { bst.and.others.output * }
+                  { numnames #2 > 
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.ands * t * }
+                        if$
+                      }
+                      { nameorder.temp "random" = bst.use.nameorder #0 = not and
+                          { bst.cite.and.nameorder * t * }
+                          { bst.cite.and * t * }
+                        if$
+                      }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+  numnames #1 > #1 #2 = and {", eds" *} {} if$
+  numnames #1 = #1 #2 = and {", ed" *} {} if$
+}
+
+%%% laberl for abbreviated author name.
+FUNCTION {format.lab.names.abb}
+{ 's :=
+   s num.names$ 'numnames :=
+   numnames bst.and.others.num <
+     % if the number of authors is less than bst.and.others.num, full name.
+     { s format.lab.names.full }
+     % if the number of authors is equal or more than bst.and.others.num, abbreviated name.
+     { s #1 "{ll}" format.name$ bst.and.others.output * }
+   if$
+}
+
+%%% abbreviated author
+FUNCTION {author.key.label.abb}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.key.label.full}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {format.names.full.wo.and}
+{ 's :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+  { namesleft #0 > }
+      { s nameptr "{ll}{, ff}{, jj}" format.name$ 't :=
+        nameptr #1 >
+          { namesleft #1 >
+              { " " * t * }
+              { t "others" =
+                  { " " * }
+                  { numnames #2 > 
+                      { " " * t * }
+                      { " " * t * }
+                    if$
+                  }
+                if$
+              }   
+            if$
+          }
+          't
+        if$
+        nameptr #1 + 'nameptr :=
+        namesleft #1 - 'namesleft :=
+      }
+  while$
+}
+
+FUNCTION {author.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { cite$ #1 #3 substring$ }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.editor.key.full.wo.and}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.names.full.wo.and }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {editor.key.organization.key.full.wo.and}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.names.full.wo.and }
+  if$
+}
+
+FUNCTION {author.key.organization.key.full.wo.and}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.names.full.wo.and }
+  if$
+}
+
+%%% abbreviated author
+FUNCTION {author.editor.key.label.abb}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.abb }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+%%% full author
+FUNCTION {author.editor.key.label.full}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { cite$ #1 #3 substring$ }
+            { key #3 text.prefix$ }
+          if$
+        }
+        { editor format.lab.names.full }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.full}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.full }
+  if$
+}
+
+FUNCTION {author.key.organization.label.abb}
+{ author empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { author format.lab.names.abb }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.full}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.full }
+  if$
+}
+
+FUNCTION {editor.key.organization.label.abb}
+{ editor empty$
+    { key empty$
+        { organization empty$
+            { cite$ #1 #3 substring$ }
+            { "The " #4 organization chop.word #3 text.prefix$ }
+          if$
+        }
+        { key #3 text.prefix$ }
+      if$
+    }
+    { editor format.lab.names.abb }
+  if$
+}
+
+%%% Convert numbers: 0->9, 1->8, 2->7,..., 9->0
+FUNCTION {reverse.num}
+{ 's :=
+  s "1" =
+    { "8" 'year.num := }
+    { s "2" =
+        { "7" 'year.num := }
+        { s "3" =
+            { "6" 'year.num := }
+            { s "4" =
+                { "5" 'year.num := }
+                { s "5" =
+                    { "4" 'year.num := }
+                    { s "6" =
+                        { "3" 'year.num := }
+                        { s "7" =
+                            { "2" 'year.num := }
+                            { s "8" =
+                                { "1" 'year.num := }
+                                { s "9" =
+                                    { "0" 'year.num := }
+                                    { s "0" =
+                                        { "9" 'year.num := }
+                                        { "9" 'year.num := }
+                                    if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+  year.num
+}
+
+%%% Convert year (large number -> small number)
+FUNCTION {convert.year}
+{ 't := 
+  bst.reverse.year #0 =
+    { t 'tt := }
+    { t #1 #1 substring$ reverse.num 
+      t #2 #1 substring$ reverse.num *
+      t #3 #1 substring$ reverse.num *
+      t #4 #1 substring$ reverse.num * 'tt := }
+  if$
+  tt
+}
+
+%%% cyear
+FUNCTION {calc.cyear}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.full.wo.and
+    { type$ "proceedings" =
+        'editor.key.organization.key.full.wo.and
+        { type$ "manual" =
+            'author.key.organization.key.full.wo.and
+            'author.key.full.wo.and
+          if$
+        }
+      if$
+    }
+  if$
+  duplicate$
+  year empty$
+    { "2199" 'cyear := }
+    { year 'cyear := }
+  if$
+  year empty$
+    { " " "2199" convert.year * field.or.null * }
+    { " " year convert.year * field.or.null * }
+  if$
+  sortify 'sort.label :=
+  % For debug
+  econ.debug #0 = not
+    { "sort.label = ``\texttt{" write$
+      sort.label write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+ pop$
+}
+
+FUNCTION {calc.sort.label.abb}
+{ author empty$
+    { editor empty$
+       { "" }
+       { editor 's := }
+      if$
+    }
+    { author 's := }
+  if$
+  s sort.format.names.abb 't :=
+  year empty$
+    { t sortify " " * "2199" convert.year * 'sort.label.abb := }
+    { t sortify " " * year convert.year * 'sort.label.abb := }
+  if$
+  econ.debug #0 = not
+    { "sort.label.abb = ``\texttt{" write$
+      sort.label.abb write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+  if$
+}
+
+%%% flabel
+FUNCTION {calc.flabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.full
+    { type$ "proceedings" =
+        'editor.key.organization.label.full
+        { type$ "manual" =
+            'author.key.organization.label.full
+            'author.key.label.full
+          if$
+        }
+      if$
+    }
+  if$
+  'flabel :=
+  author empty$
+    'skip$
+    { author num.names$ 'numnames :=
+      numnames bst.max.author.num >
+        { alabel 'flabel := }
+        'skip$
+      if$
+    }
+  if$
+  % For debug
+  econ.debug #0 = not
+    { "flabel = ``\texttt{" write$
+      flabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% alabel
+FUNCTION {calc.alabel}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.key.label.abb
+    { type$ "proceedings" =
+        'editor.key.organization.label.abb
+        { type$ "manual" =
+            'author.key.organization.label.abb
+            'author.key.label.abb
+          if$
+        }
+      if$
+    }
+  if$
+  'alabel :=
+  % For debug
+  econ.debug #0 = not
+    { "alabel = ``\texttt{" write$
+      alabel write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% title for sorting
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+
+%%% author for sorting
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+%%% editor for sorting
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+
+%%% 1,...,9 -> 001,...,009
+%%% 10,...,99 -> 010,...,099
+FUNCTION {add.zero.to.number}
+{ 's :=
+    s text.length$ #1 =
+      { "00" s * }
+      { s text.length$ #2 =
+          { "0" s * }
+          { s }
+        if$
+      }
+   if$
+}
+
+%% entry type
+FUNCTION {bst.sort.entry.type.order}
+{ 'item.type :=
+  item.type "article" =
+    { "01" }
+    { item.type "book" =
+        { "02" }
+        { item.type "booklet" =
+            { "03" }
+            { item.type "comment" =
+                { "04" }
+                { item.type "conference" =
+                    { "05" }
+                    { item.type "inbook" =
+                        { "06" }
+                        { item.type "incollection" =
+                            { "07" }
+                            { item.type "inproceedings" =
+                                { "08" }
+                                { item.type "manual" =
+                                    { "09" }
+                                    { item.type "masterthesis" =
+                                        { "10" }
+                                        { item.type "misc" =
+                                           { "11" }
+                                           { item.type "phdthesis" =
+                                              { "12" }
+                                              { item.type "proceedings" =
+                                                 { "13" }
+                                                 { item.type "techreport" =
+                                                    { "14" }
+                                                    { item.type "unpublished" =
+                                                       { "15" }
+                                                       { "16" }
+                                                      if$
+                                                    }
+                                                   if$
+                                                 }
+                                                if$
+                                              }
+                                             if$
+                                           }
+                                          if$
+                                        }
+                                      if$
+                                    }
+                                if$
+                                }
+                            if$
+                            }
+                        if$
+                        }
+                    if$
+                    }
+                if$
+                }
+            if$
+            }
+        if$
+        }
+    if$
+    }
+  if$
+}
+
+%%% Create sort.key$: absorder -> author -> year -> order -> month -> title.
+FUNCTION {presort.one}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " *
+  sort.label.abb *
+  " " *  
+  type$ "book" = type$ "inbook" = or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  * " " *
+  " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two}
+{
+  bst.no.sort #0 = not
+    { order.cited int.to.str$ add.zero.to.number " " * }
+    { "" }
+  if$
+  bst.sort.year #0 = not
+    %% Use year field as the primary sorting key.
+    { year convert.year * }
+    'skip$
+  if$
+  bst.sort.entry.type #0 = not
+    { type$ bst.sort.entry.type.order * " " * }
+    'skip$
+  if$
+  absorder empty$
+    { "/// " * }
+    { bst.notuse.absorder.field #0 =
+       { absorder "999" =
+          { "zzz " * }
+          { absorder add.zero.to.number "000" =
+             { "/// " * }
+             { absorder add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  " " * sort.label * " "
+  order empty$
+    { "/// " * }
+    { bst.notuse.order.field #0 =
+       { order "999" =
+          { "zzz " * }
+          { order add.zero.to.number "000" =
+             { "/// " * }
+             { order add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+       { "/// " * }
+      if$
+    }
+  if$
+  month empty$
+    { * "/// " * }
+       { month "999" =
+          { * month add.zero.to.number * "zzz " * }
+          { month add.zero.to.number "000" =
+             { * month add.zero.to.number * "/// " * }
+             { * month add.zero.to.number * " " * }
+            if$
+          }
+         if$
+       }
+  if$
+  title field.or.null sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+  % For debug
+  econ.debug #0 = not
+    { "``\texttt{" write$
+      sort.key$ write$
+      "}''\\" write$
+      newline$
+    }
+    'skip$
+ if$
+}
+
+%%% Codes for debugging
+FUNCTION {calc.alabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.alabel: alabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {calc.flabel.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.flabel: flabel = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+FUNCTION {presort.one.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (1st time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {presort.two.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of presort (2nd time): \$sort.key = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.cyear.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.cyear: sort.label = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+FUNCTION {calc.sort.label.abb.mess}
+{ econ.debug #0 = not
+    { "\textbf{Iteration of calc.sort.label.abb: sort.label.abb = }\\" write$
+      newline$ }
+    'skip$
+ if$
+}
+
+%%% alabel
+EXECUTE {calc.alabel.mess}
+ITERATE {calc.alabel}
+
+%%% flabel
+EXECUTE {calc.flabel.mess}
+ITERATE {calc.flabel}
+
+%%% cyear and sort.label
+EXECUTE {calc.cyear.mess}
+ITERATE {calc.cyear}
+
+%%%
+EXECUTE {calc.sort.label.abb.mess}
+ITERATE {calc.sort.label.abb}
+
+%%% Sorting by $sort.key (first time)
+%
+% Sorting is done in two times. This is the first time.
+%
+EXECUTE {presort.one.mess}
+ITERATE {presort.one}
+SORT
+
+FUNCTION {forward.pass}
+{ bst.use.bysame #0 = bst.use.bysame #2 = or
+    % Not use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+    }
+    % Use \bysame
+    { last.sort.label sort.label.abb =
+        { last.extra.num #1 + 'last.extra.num :=
+          last.extra.num int.to.chr$ 'extra.label :=
+        }
+        { "a" chr.to.int$ 'last.extra.num :=
+          "" 'extra.label :=
+          sort.label.abb 'last.sort.label :=
+        }
+      if$
+      author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+      if$
+      'this.author :=
+      % format.names 'this.author :=
+      this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+      if$
+    }
+  if$
+}
+
+FUNCTION {reverse.pass}
+{ next.extra "b" =
+    { "a" 'extra.label := }
+    'skip$
+  if$
+  extra.label empty$ not
+    { cyear extra.label * }
+    { cyear "" * }
+  if$
+  "" field.or.null *
+  'cyear :=
+  extra.label 'next.extra :=
+}
+
+%%% \bysame
+ITERATE {forward.pass}
+
+REVERSE {reverse.pass}
+
+%%% Sorting by sort.key$ (second time)
+EXECUTE {presort.two.mess}
+ITERATE {presort.two}
+SORT
+
+FUNCTION {reset.prev.author}
+{ "xxyyzz" 'prev.author := }
+
+EXECUTE {reset.prev.author}
+
+FUNCTION {forward.pass.two}
+{ bst.use.bysame #1 = 
+    { author empty$
+        { editor empty$
+          { "" }
+          'format.editors.alt
+          if$
+        }
+        'format.authors.alt
+     if$
+     'this.author :=
+     this.author prev.author =
+        { "bysame" 'extra.label.bysame := }
+        { this.author "" =
+            { "abcxyz" }
+            'this.author
+          if$
+          'prev.author :=
+        }
+     if$
+    }
+   'skip$
+  if$
+}
+
+ITERATE {forward.pass.two}
+
+FUNCTION{punctuation}
+{
+  "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%" write$ newline$
+  "%  This bbl file is created by " econ.file * " ver." * econ.version *          write$ newline$
+  "%  The latest " econ.file * " is available at " *			write$ newline$
+  "%  <https://github.com/ShiroTakeda/econ-bst>"                        write$ newline$ newline$
+}
+
+EXECUTE {punctuation}
+
+FUNCTION {begin.bib}
+{
+  preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  bst.use.bysame #0 =
+     % Not use \bysame.
+     'skip$
+     % Use \bysame.
+     { "%%% Definition of \bysame" write$ newline$
+       "\ifx\undefined\bysame" write$ newline$
+       "\newcommand{\bysame}{" bst.bysame.definition * "}" *
+       write$ newline$
+       "\fi" write$ newline$ newline$ }
+  if$
+  %% When number index is attached to the beginning of each item.
+  bst.use.number.index #0 =
+     'skip$
+     { bst.number.index.digit "1" =
+         % one digit.
+         { bst.number.index.bibhang.one }
+         { bst.number.index.digit "2" =
+            % two digits.
+            { bst.number.index.bibhang.ten }
+            % three or more digits.
+            { bst.number.index.bibhang.hund }
+           if$
+         }
+       if$
+       'hang :=
+       "%%% Redefinition of \bibhang" write$ newline$
+       "\ifx\undefined\bibhang" write$ newline$
+       "\relax" write$ newline$
+       "\else" write$ newline$
+       "\setlength{\bibhang}{"
+       hang * "}" * write$ newline$ 
+       "\fi" write$ newline$ newline$
+       }
+  if$
+  "\begin{thebibliography}{xxx}" write$ newline$
+
+  %% Initialize the variable `index'.
+  #0 'index :=
+}
+
+FUNCTION {end.bib}
+{ newline$ "\end{thebibliography}" write$ newline$ }
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+EXECUTE {end.bib}
+
+%  --------------------
+%  Local Variables:
+%  fill-column: 78
+%  mode: bst
+%  End: