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authorKarl Berry <karl@freefriends.org>2022-04-05 22:12:33 +0000
committerKarl Berry <karl@freefriends.org>2022-04-05 22:12:33 +0000
commitb32b580b9e7012fb813fdad8546e2c9f1cfb7e3e (patch)
tree9a96ce3ebc3e73eb083aae80199338570b6a8009 /Master/texmf-dist/bibtex
parentab4a80dad155a63b864adc6c001084ae50f407a4 (diff)
quantumarticle (25mar22)
git-svn-id: svn://tug.org/texlive/trunk@62944 c570f23f-e606-0410-a88d-b1316a301751
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+% This is the BibTeX style file for the Quantum journal.
+% It is based on hyperabbrv.bst, and the extensions by Aram Harrow
+% (see https://github.com/harrow/arxiv-bibstyle) and Andrew Comech
+% (see https://www.math.tamu.edu/~comech/tools/bibtex-doi-eprint/).
+%
+% In addition to added arxiv and DOI hyperlinks, the file style incorporates design
+% choices made for Quantum journal, in particular in the light of online availability.
+% Furthermore, this file style introduces some custom reference classes as well as
+% custom entry fields.
+
+ENTRY
+ { address
+ archivePrefix
+ author
+ booktitle
+ chapter
+ code
+ commit
+ date
+ doi
+ edition
+ editor
+ eprint
+ howpublished
+ institution
+ journal
+ journaltitle
+ key
+ month
+ note
+ nolink
+ number
+ organization
+ pages
+ primaryClass
+ publisher
+ school
+ series
+ shortjournal
+ shorturl
+ title
+ type
+ url
+ urldate
+ version
+ volume
+ year
+ }
+ {}
+ {}
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% Variables and state descriptors
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+INTEGERS
+ {
+ % These are state describing integers to control
+ % punctuation, capitalization, and line breaks
+ output.state
+ before.all
+ mid.sentence
+ after.sentence
+ after.block
+
+ multiresult
+ doi.linked
+
+ % Counters
+ length
+ namesleft
+ numnames
+ found.slashes
+ number.label
+ longest.label.width
+
+ % Config integers
+ % - whether to print out DOI links explicitly or add the link to parts of the
+ % citation itself.
+ explicit.doi.links
+ % - whether to raise compilation errors from (many) BibTeX warnings
+ warnings.are.errors
+
+ % pointers
+ nameptr
+ ptr
+ }
+
+STRINGS { s t m longest.label label }
+
+FUNCTION {init.state.consts}
+{ % Initialize the global state describing integeres for punctuation
+ % Args:
+ % Returns:
+ #0 'before.all :=
+ #1 'mid.sentence :=
+ #2 'after.sentence :=
+ #3 'after.block :=
+}
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% Custom warning
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+FUNCTION {my.warning}
+{ % Print cited element in bibliography with error message in red.
+ % If warnings.are.errors (default:True), raise a \PackageError
+ % Args: str - Warning message
+ % Returns:
+ 'm :=
+ "{\color{red}{ This bibitem caused a BibTeX warning: " m * " entry.}}" *
+ warnings.are.errors
+ { "\PackageError{quantum.bst}{The bibitem " *
+ cite$ *
+ " caused a BibTeX warning}" *
+ "{By default, quantum.bst handles BibTeX warnings like compilation " *
+ "errors. Please refer to the bibliography style demo for details and options.}" *
+ }
+ 'skip$
+ if$
+ write$
+ m cite$ * warning$
+}
+
+FUNCTION {my.warning.newline}
+{ % Print cited element in bibliography with error message in red.
+ % If warnings.are.errors (default:True), raise a \PackageError
+ % This function includes a newline in the bibliography to ensure
+ % that the error message for missing links is formatted correctly.
+ % Args: str - Second line of warning message
+ % str - First line of warning message
+ % Returns:
+ 's :=
+ 'm :=
+ "{\color{red}{ This bibitem caused a BibTeX warning: " m * "}}" *
+ write$
+ newline$
+ "{\color{red}{" s * " entry.}}" *
+ warnings.are.errors
+ { "\PackageError{quantum.bst}{The bibitem " *
+ cite$ *
+ " caused a BibTeX warning}" *
+ "{By default, quantum.bst handles BibTeX warnings like compilation " *
+ "errors. Please refer to the bibliography style demo for details.}" *
+ }
+ 'skip$
+ if$
+ write$
+ m cite$ * warning$
+}
+
+FUNCTION {my.crossref.warning}
+{ % Print cited crossref element in bibliography with error message in red.
+ % If warnings.are.errors (default:True), raise a \PackageError
+ % Args: str - Warning message
+ % Returns:
+ 'm :=
+ warnings.are.errors
+ { "{\color{red} This bibitem caused a crossref-BibTeX warning: need "
+ m * " to crossref.}\PackageError{quantum.bst}{The crossref bibitem " *
+ cite$ *
+ " caused a BibTeX warning}" *
+ "{By default, quantum.bst handles BibTeX warnings like compilation " *
+ "errors. Please refer to the bibliography style demo for details.}" *
+ write$
+ }
+ 'skip$
+ if$
+ "need " m * " for " * cite$ * " to crossref " * crossref * warning$
+}
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% Boolean functions
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+FUNCTION {not}
+{ % Logical NOT of a "Boolean"
+ % Args: int - Boolean to negate
+ % Returns: int - negated Boolean
+ { #0 }
+ { #1 }
+ if$
+}
+
+FUNCTION {and}
+{ % Logical AND between two "Booleans"
+ % Args: int - First Boolean to combine
+ % int - Second Boolean to combine
+ % Returns: int - logical AND of input Booleans
+ 'skip$
+ { pop$ #0 }
+ if$
+}
+
+FUNCTION {or}
+{ % Logical OR between two "Booleans"
+ % Args: int - First Boolean to combine
+ % int - Second Boolean to combine
+ % Returns: int - logical OR of input Booleans
+ { pop$ #1 }
+ 'skip$
+ if$
+}
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% String manipulation
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+FUNCTION {string.length}
+{ % Count the length of a string
+ % Args: str - String to count
+ % Returns: int - Length of input string
+ #1 'length :=
+ % Increase the length by 1 until the substring of the current length is the full string
+ {duplicate$ duplicate$ #1 length substring$ = not}
+ {length #1 + 'length :=}
+ while$
+ % Pop the string and return the length
+ pop$ length
+}
+
+FUNCTION {contains.substring}
+{ % Check whether a substring is contained in a string
+ % Args: str - Substring to find in larger string
+ % str - String to find the substring in
+ % Returns: int("Boolean") - whether the substring is contained in the string
+ 's :=
+ 't :=
+ % Count the length of the substring
+ s string.length 'length :=
+ % cut away starting characters of the string until it is empty or the substring is found
+ { t empty$ not }
+ % Check whether the current string starts with the substring
+ { t #1 length substring$ s =
+ { % If yes, empty the string and return #1
+ "" 't :=
+ #1
+ }
+ { % If not, delete the first character of the string
+ t #2 global.max$ substring$ 't :=
+ % If the string is empty, return #0
+ t empty$
+ { #0 }
+ 'skip$
+ if$
+ }
+ if$
+ }
+ while$
+}
+
+FUNCTION {chop.word}
+{ % Chop the beginning of a string if it matches a given second string
+ % Args: str - String to chop
+ % int - Length of substring to match
+ % str - Substring to match
+ % Returns: str - (Potentially) chopped string
+ 's :=
+ 'length :=
+ s #1 length substring$ =
+ { s length #1 + global.max$ substring$ }
+ 's
+ if$
+}
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% Elementary output functions
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+FUNCTION {output.nonnull}
+{ % Output a string that is guaranteed not to be empty
+ % Args: str - String to process
+ % Returns:
+ % The written output via write$ depends on the position in a sentence or block,
+ % as stored in outpute.state, which is updated accordingly.
+ 's :=
+ output.state mid.sentence =
+ 'write$
+ { output.state after.block =
+ { add.period$ write$
+ newline$
+ "\newblock " write$
+ }
+ { output.state before.all =
+ 'write$
+ { add.period$ " " * write$ }
+ if$
+ }
+ if$
+ mid.sentence 'output.state :=
+ }
+ if$
+ s
+}
+
+FUNCTION {output}
+{ % Output a string if it is not empty
+ % Args: str - String to check and output
+ % Returns:
+ duplicate$ empty$
+ 'pop$
+ 'output.nonnull
+ if$
+}
+
+FUNCTION {output.check}
+{ % Check whether a string is empty, output it if it is not, and raise a my.warning if it is.
+ % Args: str - Describing string of argument that is checked to provide a useful error message
+ % str - String to check and output if it is not empty
+ % Returns:
+ 't :=
+ duplicate$ empty$
+ { pop$ "empty " t * " in " * my.warning }
+ 'output.nonnull
+ if$
+}
+
+FUNCTION {no.output.check}
+{ % Check whether a string is empty and raise a my.warning if it is.
+ % Args: str - Describing string of argument that is checked to provide a useful error message
+ % str - String to check
+ % Returns:
+ 't :=
+ duplicate$ empty$
+ { pop$ "empty " t * " in " * my.warning }
+ 'skip$
+ if$
+}
+
+FUNCTION {no.output.check.links}
+{ % Check whether a string is empty and raise a my.warning.newline if it is.
+ % Args: str - Describing string of argument that is checked to provide a useful error message
+ % str - String to check
+ % Returns:
+ % The separate handling from no.output.check is the special warning message that contains
+ % special characters, requiring us to use my.warning.newline. In addition, if the field
+ % `nolink` is not missing (it may be empty though), the warning is not raised.
+ 't :=
+ duplicate$ empty$ nolink missing$ and
+ { pop$ "empty " t * ". " *
+ "If none of these fields is applicable for the cited work you can include the field " *
+ "\verb|`nolink = {}`| in its bib"
+ my.warning.newline
+ }
+ 'skip$
+ if$
+}
+
+FUNCTION {output.bibitem}
+{ % Write the current buffer and the header for a new bibitem to the bbl file and
+ % updates the output.state
+ % Args: str - Current buffer is written to the bbl file
+ % Returns: str - An empty string
+ newline$
+ % Write the header for a new bibitem
+ "\bibitem{" write$
+ cite$ write$
+ "}" write$
+ newline$
+ ""
+ before.all 'output.state :=
+}
+
+FUNCTION {fin.entry}
+{ % Finalize an entry by appending a period if appropriate and writing to the bbl file
+ % Args: str - Current string to write to the bbl file
+ % Returns:
+ add.period$
+ write$
+ newline$
+}
+
+FUNCTION {new.block}
+{ % Start a new block in an entry, setting the output.state accordingly
+ % Args:
+ % Returns:
+ output.state before.all =
+ 'skip$
+ { after.block 'output.state := }
+ if$
+}
+
+FUNCTION {new.sentence}
+{ % Start a new sentence in an entry, setting the output.state accordingly
+ % Args:
+ % Returns:
+ output.state after.block =
+ output.state before.all =
+ or
+ 'skip$
+ { after.sentence 'output.state := }
+ if$
+}
+
+FUNCTION {new.block.checka}
+{ % Start a new block in an entry if the input string is not empty
+ % Args: str - String to decide whether a new block is started
+ % Returns:
+ empty$
+ 'skip$
+ 'new.block
+ if$
+}
+
+FUNCTION {new.block.checkb}
+{ % Start a new block in an entry if any of two input strings are not empty
+ % Args: str - Second string to decide whether a new block is started
+ % str - First string to decide whether a new block is started
+ % Returns:
+ empty$
+ swap$ empty$
+ and
+ 'skip$
+ 'new.block
+ if$
+}
+
+FUNCTION {new.sentence.checka}
+{ % Start a new sentence in an entry if the input string is not empty
+ % Args: str - String to decide whether a new sentence is started
+ % Returns:
+ empty$
+ 'skip$
+ 'new.sentence
+ if$
+}
+
+FUNCTION {new.sentence.checkb}
+{ % Start a new sentence in an entry if any of two input strings are not empty
+ % Args: str - Second string to decide whether a new sentence is started
+ % str - First string to decide whether a new sentence is started
+ % Returns:
+ empty$
+ swap$ empty$
+ and
+ 'skip$
+ 'new.sentence
+ if$
+}
+
+FUNCTION {field.or.null}
+{ % Replace an empty field or string by the empty string ""
+ % Args: str - Field or string to check and replace
+ % Returns: str - The input string if it was not empty, else ""
+ % This function does nothing on strings, it just replaces empty (but defined)
+ % fields by the empty string in order to allow for string comparisons and other operations
+ % that are not defined on empty (non-string) fields.
+ duplicate$ empty$
+ { pop$ "" }
+ 'skip$
+ if$
+}
+
+FUNCTION {tie.or.space.connect}
+{ % Connect two strings with a space or a non-breaking ~
+ % Args: str - Second string to connect. If it is shorter than 3 characters, a ~ is used
+ % str - First string to connect.
+ % Returns: str - The connected strings.
+ duplicate$ text.length$ #3 <
+ { % Use a ~ if the second string is shorter than 3 characters
+ "~"
+ }
+ { % Use a space else
+ " "
+ }
+ if$
+ % Bring the strings in the order (first string, connector, second string) and merge them
+ swap$ * *
+}
+
+FUNCTION {init.longest.label}
+{ % Initializes globally used variables to determine the longest label in the bibliography
+ % Args:
+ % Returns:
+ "" 'longest.label :=
+ #1 'number.label :=
+ #0 'longest.label.width :=
+}
+
+FUNCTION {longest.label.pass}
+{ % Update the longest.label.width and the longest.label, as measured by width$
+ % Args:
+ % Returns:
+ % Note that this function does not require any input from the bilbiography items,
+ % but only depends on the number of items.
+ number.label int.to.str$ 'label :=
+ number.label #1 + 'number.label :=
+ label width$ longest.label.width >
+ { label 'longest.label :=
+ label width$ 'longest.label.width :=
+ }
+ 'skip$
+ if$
+}
+
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% Entry formatting
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+FUNCTION {boldfont}
+{ % Add a bold font formatting string to a string (if it is not empty)
+ % Args: str - The string to format in bold font
+ % Returns: str - The input string wrapped in a formatting string for bold font
+ % Only add the formatting string to a non-empty string
+ duplicate$ empty$
+ { pop$ "" }
+ { "{\bf " swap$ * "}" * }
+ if$
+}
+
+FUNCTION {format.names}
+{ % Format a given string with names
+ % Args: str - The string with names
+ % Returns: str - The formatted names
+ 's :=
+ % initialize pointer, counter for names and counter for names to handle left
+ #1 'nameptr :=
+ s num.names$ 'numnames :=
+ numnames 'namesleft :=
+ % Iterate over names
+ { namesleft #0 > }
+ { s nameptr "{ff~}{vv~}{ll}{, jj}" format.name$ 't :=
+ nameptr #1 >
+ { % After the first name, include connecting characters
+ namesleft #1 >
+ { % If there is more than the current name left, use a comma
+ ", " * t *
+ }
+ { % If there is only the current name left, use "and" or "et al."
+ numnames #2 >
+ { % Add a comma before "and" if there were more than two names
+ "," *
+ }
+ 'skip$
+ if$
+ t "others" =
+ { % Replace "and others" by "et~al."
+ " et~al." *
+ }
+ { " and " * t * }
+ if$
+ }
+ if$
+ }
+ { % Simply write the first name to buffer
+ t
+ }
+ if$
+ nameptr #1 + 'nameptr :=
+ namesleft #1 - 'namesleft :=
+ }
+ while$
+}
+
+FUNCTION {format.authors}
+{ % Apply format.names to the author field and return it
+ % Args:
+ % Returns: str - author field formatted via format.names
+ % If the author field is empty, the empty string is returned instead.
+ author empty$
+ { "" }
+ { author format.names }
+ if$
+}
+
+FUNCTION {format.editors}
+{ % Apply format.names to the editor field, add a remark "editor(s)" to it, and return it
+ % Args:
+ % Returns: str - editor field formatted via format.names, with ", editor(s)" appended.
+ % If the editor field is empty, the empty string is returned instead.
+ editor empty$
+ { "" }
+ {
+ editor format.names
+ ", editor" *
+ % Add plural "s" if multiple editors are given
+ editor num.names$ #1 >
+ { "s" * }
+ 'skip$
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.title}
+{ % Wrap the title in quotation marks and change its capitalization.
+ % Args:
+ % Returns: str - title field wrapped in quotation marks with new capitalization
+ % Note that change.case$ together with the option "t" removes all capitalization
+ % of text that is not in curly braces, except for the very first character.
+ title empty$
+ { "" }
+ { "``" title "t" change.case$ * "''" * }
+ if$
+}
+
+FUNCTION { format.arxiv.hyperlink }
+{ % Extract the arXiv handle from a string, removing a leading "arXiv"
+ % Args: str - The string to extract the handle from
+ % Returns: str - The extracted arXiv handle
+ % If the string starts with "arxiv:" or "arxiv" (or any capitalized version of these),
+ % the length-9 handle is extracted, otherwise the original string is returned.
+ duplicate$ #1 #6 substring$ "l" change.case$ "arxiv:" =
+ { #7 #9 substring$ }
+ { duplicate$ #1 #5 substring$ "l" change.case$ "arxiv" =
+ { #6 #9 substring$ }
+ 'skip$
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.eprint}
+{ % Format the eprint link, including the hyperlink and the link text.
+ % Args:
+ % Returns: str - Hyperlink to extracted arxiv reference
+ eprint empty$
+ { "" }
+ { archivePrefix empty$
+ { primaryClass empty$
+ { "arXiv" }
+ { primaryClass }
+ if$
+ }
+ { archivePrefix }
+ if$
+ " \href{http://arxiv.org/abs/"
+ eprint format.arxiv.hyperlink *
+ "}{" *
+ swap$ *
+ ":" *
+ eprint #1 #5 substring$ "arXiv" =
+ { eprint #7 #15 substring$ * }
+ { eprint * }
+ if$
+ "}" *
+ }
+ if$
+}
+
+FUNCTION {add.doi.link}
+{ % Add a hyperlink referring to a DOI reference to a string, using the doi field.
+ % Args: str - String to add the hyperlink to
+ % Returns: str - Input string with hyperlink added
+ "\href{https://dx.doi.org/" doi * "}{" * swap$ * "}" *
+}
+
+FUNCTION {n.dashify}
+{ % Replace single dashes by double dashes
+ % Args: str - Input string to be modified
+ % Returns: str - Input string with single dashes replaced by double dashes
+ 't :=
+ ""
+ % Iterate over the characters in the string
+ { t empty$ not }
+ { t #1 #1 substring$ "-" =
+ {
+ t #1 #2 substring$ "--" = not
+ { % If the current `t` starts with a "-" but not with "--", replace
+ % the single dash with "--" and cut the leading dash from `t`
+ "--" *
+ t #2 global.max$ substring$ 't :=
+ }
+ { % If the current `t` starts with a "--", add all dashes in the
+ % current `t` to the output string without any replacement
+ { t #1 #1 substring$ "-" = }
+ { "-" *
+ t #2 global.max$ substring$ 't :=
+ }
+ while$
+ }
+ if$
+ }
+ { % If the current `t` does not start with a dash, simply move the first
+ % character to the output string.
+ t #1 #1 substring$ *
+ t #2 global.max$ substring$ 't :=
+ }
+ if$
+ }
+ while$
+}
+
+FUNCTION {format.year}
+{ % Format the year of an entry
+ % Args:
+ % Returns: str - Formatted year in brackets
+ % If the year field is empty, the year is extracted from the date field, assuming
+ % that it starts with the year.
+ year empty$
+ { date empty$
+ { "" }
+ { "~(" date #1 #4 substring$ * ")" * }
+ if$
+ }
+ { "~(" year * ")" * }
+ if$
+}
+
+FUNCTION {format.urldate}
+{ % Format the date on which a URL was accessed
+ % Args:
+ % Returns: str - The formatted date in brackets with a remark "accessed:"
+ % The urldate field preceeds the date field.
+ urldate empty$
+ { date empty$
+ { "" }
+ { "(accessed:~" date * ")" * }
+ if$
+ }
+ { "(accessed:~" urldate * ")" * }
+ if$
+}
+
+FUNCTION {format.chapter}
+{ % Format the chapter field for an entry
+ % Args: int - "Boolean" indicating whether the "Chapter" should be turned to lower case
+ % Returns: str - The formatted chapter with leading "Chapter" string.
+ % If the field `type` is not empty, it is used instead of the generic "Chapter".
+ type empty$
+ { "Chapter" }
+ { type }
+ if$
+ swap$
+ { "l" change.case$ }
+ 'skip$
+ if$
+ chapter tie.or.space.connect
+}
+
+FUNCTION {multi.page.check}
+{ % Check whether a string indicates multiple pages
+ % Args: str - The string describing a page or multiple pages
+ % Returns: int - "Boolean" indicating whether the string describes multiple pages
+ 't :=
+ #0 'multiresult :=
+ { multiresult not
+ t empty$ not
+ and
+ }
+ { % Check whether the first character in the current `t` is one of "-", "," or "+"
+ t #1 #1 substring$
+ duplicate$ "-" =
+ swap$ duplicate$ "," =
+ swap$ "+" =
+ or or
+ { #1 'multiresult := }
+ { % Remove the first character from the current `t`
+ t #2 global.max$ substring$ 't :=
+ }
+ if$
+ }
+ while$
+ multiresult
+}
+
+FUNCTION {format.pages}
+{ % Format the pages field of an entry
+ % Args: int - "Boolean" indicating whether to capitalize the word "page(s)"
+ % Returns: str - The formatted pages field, including the word "page(s)"
+ { "p" }
+ { "P" }
+ if$
+ pages multi.page.check
+ { "ages" * pages n.dashify tie.or.space.connect }
+ { "age" * pages tie.or.space.connect }
+ if$
+}
+
+FUNCTION {format.bvol.series}
+{ % Format the book volume and the series of an entry
+ % Args:
+ % Returns: str - The volume and series field formatted into one string.
+ % Raises a warning if the field `number` is present in addition to `volume`.
+ volume empty$
+ { "" }
+ { mid.sentence output.state =
+ { "v" }
+ { "V" }
+ if$
+ "olume" * volume tie.or.space.connect
+ series empty$
+ 'skip$
+ { " of " * series * }
+ if$
+ number empty$
+ 'skip$
+ { "can't use both volume and number fields in " * my.warning }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.bvol.chap.pages}
+{ % Format the book volume, series and the chapter and pages of an entry
+ % Args:
+ % Returns: str - The volume and series field formatted into one string.
+ % This function wraps the previously defined functions format.bvol.series,
+ % format.chapter, and format.pages into one.
+ format.bvol.series
+ chapter empty$
+ 'skip$
+ { duplicate$ empty$
+ { #0 }
+ { ", " *
+ #1
+ }
+ if$
+ format.chapter *
+ }
+ if$
+ pages empty$
+ 'skip$
+ { duplicate$ empty$
+ { #0 }
+ { ", " *
+ #1
+ }
+ if$
+ format.pages *
+ }
+ if$
+}
+
+FUNCTION {format.number.series}
+{ % Format the number and the series of an entry
+ % Args:
+ % Returns: str - The number and series field formatted into one string.
+ % The returned string is empty if the `volume` field is not empty.
+ % Raises a warning if the field `series` is empty.
+ volume empty$
+ { number empty$
+ { series field.or.null }
+ { output.state mid.sentence =
+ { "number" }
+ { "Number" }
+ if$
+ number tie.or.space.connect
+ series empty$
+ { "there's a number but no series in " my.warning }
+ { " in " * series * }
+ if$
+ }
+ if$
+ }
+ { "" }
+ if$
+}
+
+FUNCTION {format.edition}
+{ % Format the edition field of an entry
+ % Args:
+ % Returns: str - The edition of the entry with "edition" comment, if it
+ % is not contained in the field itself already.
+ edition empty$
+ { "" }
+ { output.state mid.sentence =
+ { edition "l" change.case$ }
+ { edition "t" change.case$ }
+ if$
+ edition "edition" contains.substring
+ 'skip$
+ { " edition" * }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.vol.pages}
+{ % Format the volume and pages for an article entry
+ % Args:
+ % Returns: The volume and page numbers as a single string
+ volume field.or.null boldfont
+ pages empty$
+ 'skip$
+ { duplicate$ empty$
+ { pop$ mid.sentence output.state = format.pages }
+ { " " swap$ * ", " * pages n.dashify * }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.chapter.pages}
+{ % Format the chapter and pages for an entry
+ % Args:
+ % Returns: str - chapter and pages description in one string
+ chapter empty$
+ { #0 format.pages }
+ {
+ mid.sentence output.state =
+ format.chapter
+ pages empty$
+ 'skip$
+ { ", " * #1 format.pages * }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.in.ed.booktitle}
+{ % Format the booktitle together with editors of an entry
+ % Args:
+ % Returns: The booktitle for an entry contained in the book.
+ booktitle empty$
+ { "" }
+ { editor empty$
+ { "In " booktitle * }
+ { "In " format.editors * ", " * booktitle * }
+ if$
+ }
+ if$
+}
+
+FUNCTION {empty.misc.check}
+{ % Checks whether all relevant fields for a misc entry are empty
+ % Args:
+ % Returns:
+ % Raises a warning if all fields are empty
+ author empty$ title empty$ howpublished empty$
+ month empty$ year empty$ note empty$
+ and and and and and
+ % Only warn for entries that actually have a key
+ key empty$ not and
+ { "all relevant fields are empty in " my.warning }
+ 'skip$
+ if$
+}
+
+FUNCTION {format.thesis.type}
+{ % Replace a string with the type field if given, and add a DOI link
+ % Args: str - String to add the DOI link to, or to replace by the `type` field.
+ % Returns: str - Input string or `type` string if present, with DOI link.
+ type empty$
+ 'skip$
+ { pop$
+ type "t" change.case$
+ }
+ if$
+ doi missing$
+ explicit.doi.links
+ or
+ 'skip$
+ { add.doi.link }
+ if$
+}
+
+FUNCTION {format.tr.number}
+{ % Format the number of a technical report and add the remark "Technical Report"
+ % or the `type` field if present.
+ % Args:
+ % Returns: str - `type` field or "Technical Report" together with the `number` field
+ type empty$
+ { "Technical Report" }
+ 'type
+ if$
+ number empty$
+ { "t" change.case$ }
+ { number tie.or.space.connect }
+ if$
+}
+
+FUNCTION {get.journal}
+{ % Obtain the journal from either journal, journaltitle or shortjournal,
+ % in that order of priority
+ % Args:
+ % Returns: str - The name of the journal.
+ journal missing$
+ {
+ journaltitle missing$
+ {
+ shortjournal missing$
+ { "" }
+ { shortjournal }
+ if$
+ }
+ { journaltitle }
+ if$
+ }
+ { journal }
+ if$
+}
+
+FUNCTION {format.article.crossref}
+{ % Fomat a cross-reference of an article
+ % Args:
+ % Returns: str - Crossref entry for an article incl. citation
+ key empty$
+ { get.journal empty$
+ { "key or journal" my.crossref.warning
+ ""
+ }
+ { "In {\em " get.journal * "\/}" * }
+ if$
+ }
+ { "In " key * }
+ if$
+ " \cite{" * crossref * "}" *
+}
+
+FUNCTION {format.crossref.editor}
+{ % Fomat the editors for a cross-reference to a book, collection or proceedings
+ % Args:
+ % Returns: str - Editors names formatted for a cross-reference.
+ editor #1 "{vv~}{ll}" format.name$
+ editor num.names$ duplicate$
+ #2 >
+ { pop$ " et~al." * }
+ { #2 <
+ 'skip$
+ { editor #2 "{ff }{vv }{ll}{ jj}" format.name$ "others" =
+ { " et~al." * }
+ { " and " * editor #2 "{vv~}{ll}" format.name$ * }
+ if$
+ }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.book.crossref}
+{ % Fomat a cross-reference to a book
+ % Args:
+ % Returns: str - Crossref entry to a book incl. citation
+ volume empty$
+ { "volume" my.crossref.warning
+ "In "
+ }
+ { "Volume" volume tie.or.space.connect
+ " of " *
+ }
+ if$
+ editor empty$
+ editor field.or.null author field.or.null =
+ or
+ { key empty$
+ { series empty$
+ { "editor, key, or series" my.crossref.warning
+ "" *
+ }
+ { "{\em " * series * "\/}" * }
+ if$
+ }
+ { key * }
+ if$
+ }
+ { format.crossref.editor * }
+ if$
+ " \cite{" * crossref * "}" *
+}
+
+FUNCTION {format.incoll.inproc.crossref}
+{ % Fomat a cross-reference for an entry from a collection or proceedings
+ % Args:
+ % Returns: str - Crossref entry to the collection/proceedings incl. citation.
+ editor empty$
+ editor field.or.null author field.or.null =
+ or
+ { key empty$
+ { booktitle empty$
+ { "editor, key, or booktitle" my.crossref.warning
+ ""
+ }
+ { "In {\em " booktitle * "\/}" * }
+ if$
+ }
+ { "In " key * }
+ if$
+ }
+ { "In " format.crossref.editor * }
+ if$
+ " \cite{" * crossref * "}" *
+}
+
+FUNCTION {extract.repo}
+{ % Obtain the repository name from the `code` field
+ % Args:
+ % Returns: str - The repository name to print
+ % Look for registered formatting of github repos and remove them
+ "github.com/" #11
+ "www.github.com/" #15
+ "https://github.com/" #19
+ code
+ chop.word
+ chop.word
+ chop.word
+ % Extract the part of the repository name until the second slash
+ 't :=
+ #0 'found.slashes :=
+ #1 'ptr :=
+ { ptr t text.length$ < #2 found.slashes > and}
+ {t ptr #1 substring$ "/" =
+ { found.slashes #1 + 'found.slashes := }
+ 'skip$
+ if$
+ ptr #1 + 'ptr := }
+ while$
+ % Return only the part up to the second slash from above
+ #2 found.slashes =
+ { t #1 ptr #2 - substring$ }
+ { t #1 ptr substring$ }
+ if$
+}
+
+FUNCTION {format.version}
+{ % Format the `version` field of an entry with `code` field
+ % Args:
+ % Returns: str - The version with a "v" abbreviation
+ version empty$
+ { "" }
+ {
+ "v" version #1 #1 substring$ =
+ { " " version * }
+ { " v" version * }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.commit}
+{ % Format the `commit` field of an entry with `code` field
+ % Args:
+ % Returns: str - The commit field with the remark "commit"
+ commit empty$
+ { "" }
+ { " commit:" commit #1 #7 substring$ * }
+ if$
+}
+
+FUNCTION {format.code}
+{ % Format the `code` field
+ % Args:
+ % Returns: str - The `code` field with version and commit,
+ % including a link to the repository
+ code empty$
+ { "" }
+ { " code:~\href{" code * "}{" * extract.repo * format.version * format.commit * "}" * }
+ if$
+}
+
+FUNCTION {format.url}
+{ % Format a url
+ % Args:
+ % Returns: str - The `shorturl` (preferred) or `url` field including a link
+ % The "https" part is removed from the printed string of the hyperlink
+ shorturl empty$
+ { url empty$
+ { "" }
+ { " url:~\href{" url * "}{" * "https://" #8 url chop.word * "}" * }
+ if$
+ }
+ { " url:~\href{" url * "}{" * "https://" #8 shorturl chop.word * "}" * }
+ if$
+}
+
+FUNCTION {check.links}
+{ % Check that one of the fields providing a hyperlink is present and raise a warning if not
+ % Args:
+ % Returns:
+ % The fields of which one should be present are `doi`, `eprint` and
+ % `url`. Setting the (empty) field `nolink={}` suppresses this warning.
+ doi missing$ eprint missing$ and
+ { format.url "doi, eprint and url" no.output.check.links pop$ }
+ 'skip$
+ if$
+}
+
+FUNCTION {output.links}
+{ % Output the links of an entry
+ % Args:
+ % Returns:
+ new.block
+ explicit.doi.links
+ { % If explicit DOI links are set via the config, output it
+ % explicitly (if it's not missing)
+ doi missing$
+ 'skip$
+ { " doi:~" doi add.doi.link * output
+ new.block
+ }
+ if$
+ }
+ 'skip$ % Without explicit DOI links, it has already been added to another string.
+ if$
+ % Add eprint link
+ format.eprint output
+ doi missing$ eprint missing$ and
+ { % If the DOI and the eprint link are missing, add the `url` field hyperlink
+ new.block
+ format.url output
+ }
+ 'skip$
+ if$
+ new.block
+ % Add the code hyperlink
+ format.code output
+}
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% Interpretation of bib entries
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+FUNCTION {is.arxiv.article}
+{ % Determine whether an article class is an arxiv article only.
+ % Args:
+ % Returns: int - "Boolean" indicating whether the entry is an arxiv article only
+ % The article is considered an arxiv article only if
+ % - get.journal delivers an empty string and the `archivePrefix` field matches "arxiv"
+ % (up to capitalization)
+ % - "arxiv" (or a capitalized version of it) is present in the output of get.journal
+ % If the output of get.journal is empty and the `archivePrefix` field is present but not
+ % known, a warning is raised.
+ get.journal empty$
+ { archivePrefix missing$
+ { #0 }
+ { archivePrefix "l" change.case$ "arxiv" =
+ { #1 }
+ { "The `archivePrefix' " archivePrefix * " is not supported for entry" * my.warning
+ #0
+ }
+ if$
+ }
+ if$
+ }
+ { get.journal "l" change.case$ "arxiv" contains.substring
+ { #1 }
+ { #0 }
+ if$
+ }
+ if$
+}
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% Raw citation classes that are aliased in the public citation classes
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+FUNCTION {arxiv.article}
+{ % Format an arxiv-only article
+ output.bibitem
+ format.authors "author" output.check
+ new.block
+ format.title "title" output.check
+ crossref missing$
+ {
+ format.year "year" output.check
+ new.block
+ check.links
+ output.links
+ }
+ { format.article.crossref output.nonnull
+ #1 format.pages output
+ }
+ if$
+ fin.entry
+}
+
+FUNCTION {std.article}
+{ % Format a standard published article
+ output.bibitem
+ format.authors "author" output.check
+ new.block
+ format.title "title" output.check
+ crossref missing$
+ { new.block
+ get.journal "journal, shortjournal and journaltitle" no.output.check
+ format.vol.pages *
+ doi missing$
+ explicit.doi.links
+ or
+ 'skip$
+ { add.doi.link }
+ if$
+ output
+ format.year "year" output.check
+ new.block
+ check.links
+ output.links
+ }
+ { format.article.crossref output.nonnull
+ #1 format.pages output
+ }
+ if$
+ fin.entry
+}
+
+FUNCTION {std.misc}
+{ % Format a standard misc entry
+ output.bibitem
+ format.authors output
+ title howpublished new.block.checkb
+ format.title output
+ howpublished new.block.checka
+ howpublished output
+ format.year output
+ format.eprint output
+ new.block
+ note output
+ fin.entry
+ empty.misc.check
+}
+
+FUNCTION {thesis.start}
+{ % Format the first part of a thesis entry
+ output.bibitem
+ format.authors "author" output.check
+ new.block
+ format.title "title" output.check
+ new.block
+}
+
+FUNCTION {thesis.end}
+{ % Format the second (and last) part of a thesis entry
+ new.block
+ school "school" output.check
+ new.block
+ address output
+ format.year "year" output.check
+ new.block
+ output.links
+ fin.entry
+}
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% Recognized citation classes
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+FUNCTION {article}
+{ is.arxiv.article
+ 'arxiv.article
+ 'std.article
+ if$
+}
+
+FUNCTION {conditional.doi.link}
+{ duplicate$ empty$
+ doi missing$
+ explicit.doi.links
+ doi.linked
+ or or or
+ 'skip$
+ { add.doi.link
+ #1 'doi.linked :=
+ }
+ if$
+}
+
+FUNCTION {book}
+{ output.bibitem
+ author empty$
+ { format.editors "author and editor" output.check }
+ { format.authors output.nonnull }
+ if$
+ new.block
+ format.title "title" output.check
+ new.block
+ #0 'doi.linked :=
+ crossref missing$
+ { format.bvol.chap.pages
+ conditional.doi.link output
+ new.block
+ format.number.series
+ conditional.doi.link output
+ new.sentence
+ publisher "publisher" no.output.check
+ conditional.doi.link output
+ new.sentence
+ address output
+ }
+ { format.chapter.pages output
+ new.block
+ format.book.crossref output.nonnull
+ }
+ if$
+ format.year "year" output.check
+ new.block
+ format.edition output
+ check.links
+ output.links
+ fin.entry
+}
+
+FUNCTION {repository}
+{ output.bibitem
+ format.authors output
+ format.year output
+ new.block
+ code empty$
+ { format.url "url" output.check }
+ { format.code output }
+ if$
+ fin.entry
+}
+
+FUNCTION {website}
+{ output.bibitem
+ author empty$
+ 'skip$
+ { format.authors output.nonnull }
+ if$
+ new.block
+ format.title "title" output.check
+ new.block
+ format.url "url" output.check
+ new.block
+ code empty$
+ 'skip$
+ { format.code output
+ new.block
+ }
+ if$
+ format.urldate output
+ note output
+ fin.entry
+}
+
+FUNCTION {misc}
+{ is.arxiv.article
+ 'arxiv.article
+ 'std.misc
+ if$
+}
+
+FUNCTION {inbook}
+{
+ format.chapter.pages empty$
+ { "`inbook' requires chapter or pages, otherwise use `book'" my.warning }
+ 'skip$
+ if$
+ book
+}
+
+FUNCTION {proceedings}
+{ output.bibitem
+ editor empty$
+ { organization output }
+ { format.editors output.nonnull }
+ if$
+ new.block
+ format.title "title" no.output.check
+ doi missing$
+ explicit.doi.links
+ or
+ 'skip$
+ { add.doi.link }
+ if$
+ output
+ new.block
+ format.bvol.series output
+ format.number.series output
+ new.block
+ address empty$
+ { editor empty$
+ { publisher new.sentence.checka }
+ { organization publisher new.sentence.checkb
+ organization output
+ }
+ if$
+ new.block
+ publisher output
+ format.year "year" output.check
+ }
+ { address output.nonnull
+ format.year "year" output.check
+ new.sentence
+ editor empty$
+ 'skip$
+ { organization output }
+ if$
+ new.block
+ publisher output
+ }
+ if$
+ new.block
+ check.links
+ output.links
+ fin.entry
+}
+
+FUNCTION {booklet}
+{ output.bibitem
+ format.authors output
+ new.block
+ format.title "title" output.check
+ howpublished new.block.checka
+ howpublished output
+ address new.block.checka
+ address output
+ format.year output
+ output.links
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {unpublished}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ format.title "title" output.check
+ new.block
+ note "note" output.check
+ format.year output
+ format.eprint output
+ fin.entry
+}
+
+FUNCTION {incollection}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ format.title "title" output.check
+ new.block
+ #0 'doi.linked :=
+ crossref missing$
+ { format.in.ed.booktitle "booktitle" output.check
+ new.block
+ format.bvol.chap.pages
+ conditional.doi.link output
+ new.block
+ format.number.series
+ conditional.doi.link output
+ new.sentence
+ publisher "publisher" no.output.check
+ conditional.doi.link
+ address missing$
+ 'skip$
+ { ", " * address * }
+ if$
+ output
+ format.year "year" output.check
+ new.block
+ format.edition output
+ }
+ { format.incoll.inproc.crossref output.nonnull
+ format.chapter.pages output
+ }
+ if$
+ new.block
+ output.links
+ fin.entry
+}
+
+FUNCTION {inproceedings}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ format.title "title" output.check
+ new.block
+ #0 'doi.linked :=
+ crossref missing$
+ { format.in.ed.booktitle "booktitle" output.check
+ new.block
+ format.bvol.chap.pages
+ conditional.doi.link output
+ new.block
+ format.number.series
+ conditional.doi.link output
+ address empty$
+ { organization publisher new.sentence.checkb
+ organization output
+ publisher output
+ format.year "year" output.check
+ }
+ { address output.nonnull
+ format.year "year" output.check
+ new.sentence
+ organization output
+ new.sentence
+ publisher output
+ }
+ if$
+ }
+ { format.incoll.inproc.crossref output.nonnull
+ format.pages output
+ }
+ if$
+ new.block
+ check.links
+ output.links
+ fin.entry
+}
+
+FUNCTION {conference} { inproceedings }
+
+FUNCTION {techreport}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ format.title "title" output.check
+ new.block
+ format.tr.number
+ doi missing$
+ explicit.doi.links
+ or
+ 'skip$
+ { add.doi.link }
+ if$
+ output.nonnull
+ new.block
+ institution "institution" output.check
+ address output
+ format.year "year" output.check
+ output.links
+ fin.entry
+}
+
+FUNCTION {manual}
+{ output.bibitem
+ author empty$
+ { organization empty$
+ 'skip$
+ { organization output.nonnull
+ new.block
+ address output
+ }
+ if$
+ }
+ { format.authors output.nonnull }
+ if$
+ new.block
+ format.title "title" output.check
+ author empty$
+ { organization empty$
+ { address new.block.checka
+ address output
+ }
+ 'skip$
+ if$
+ }
+ { organization address new.block.checkb
+ organization output
+ new.block
+ address output
+ }
+ if$
+ new.block
+ format.edition output
+ format.year output
+ output.links
+ fin.entry
+}
+
+FUNCTION {mastersthesis}
+{ thesis.start
+ "Master's thesis" format.thesis.type output.nonnull
+ thesis.end
+}
+
+FUNCTION {phdthesis}
+{ thesis.start
+ "PhD thesis" format.thesis.type output.nonnull
+ thesis.end
+}
+
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% Default citation type
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+FUNCTION {default.type} { article }
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% Macros/aliases
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+MACRO {jan} {"Jan."}
+
+MACRO {feb} {"Feb."}
+
+MACRO {mar} {"Mar."}
+
+MACRO {apr} {"Apr."}
+
+MACRO {may} {"May"}
+
+MACRO {jun} {"June"}
+
+MACRO {jul} {"July"}
+
+MACRO {aug} {"Aug."}
+
+MACRO {sep} {"Sept."}
+
+MACRO {oct} {"Oct."}
+
+MACRO {nov} {"Nov."}
+
+MACRO {dec} {"Dec."}
+
+MACRO {acmcs} {"ACM Comput. Surv."}
+
+MACRO {acta} {"Acta Inf."}
+
+MACRO {cacm} {"Commun. ACM"}
+
+MACRO {ibmjrd} {"IBM J. Res. Dev."}
+
+MACRO {ibmsj} {"IBM Syst.~J."}
+
+MACRO {ieeese} {"IEEE Trans. Softw. Eng."}
+
+MACRO {ieeetc} {"IEEE Trans. Comput."}
+
+MACRO {ieeetcad}
+ {"IEEE Trans. Comput.-Aided Design Integrated Circuits"}
+
+MACRO {ipl} {"Inf. Process. Lett."}
+
+MACRO {jacm} {"J.~ACM"}
+
+MACRO {jcss} {"J.~Comput. Syst. Sci."}
+
+MACRO {scp} {"Sci. Comput. Programming"}
+
+MACRO {sicomp} {"SIAM J. Comput."}
+
+MACRO {tocs} {"ACM Trans. Comput. Syst."}
+
+MACRO {tods} {"ACM Trans. Database Syst."}
+
+MACRO {tog} {"ACM Trans. Gr."}
+
+MACRO {toms} {"ACM Trans. Math. Softw."}
+
+MACRO {toois} {"ACM Trans. Office Inf. Syst."}
+
+MACRO {toplas} {"ACM Trans. Prog. Lang. Syst."}
+
+MACRO {tcs} {"Theoretical Comput. Sci."}
+
+READ
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% BIBLIOGRAPHY HEADER AND FOOTER
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+FUNCTION {begin.bib}
+{ % Print the beginning of the bibliography to the .bbl file. Also set the
+ % "Booleans" for the global config of DOI link printing and handling of warnings.
+ #0 'explicit.doi.links :=
+ #1 'warnings.are.errors :=
+ preamble$ empty$
+ 'skip$
+ { preamble$ "MakeDoiLinksExplicit" contains.substring
+ { #1 'explicit.doi.links :=
+ "\newcommand{\MakeDoiLinksExplicit}{}" write$ newline$
+ }
+ { #0 'explicit.doi.links := }
+ if$
+ preamble$ "DoNotMakeWarningsErrors" contains.substring
+ { #0 'warnings.are.errors :=
+ "\newcommand{\DoNotMakeWarningsErrors}{}" write$ newline$
+ }
+ { #1 'warnings.are.errors := }
+ if$
+ preamble$ write$ newline$
+ }
+ if$
+ "\begin{thebibliography}{" longest.label * "}" * write$ newline$
+}
+
+FUNCTION {end.bib}
+{ % Print the ending of the bibliography to the .bbl file.
+ newline$
+ "\end{thebibliography}" write$ newline$
+}
+
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+% EXECUTION
+% % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %
+
+% Initialize global constants indicating the positions in an entry
+EXECUTE {init.state.consts}
+
+% Initialize global variables for the longest label
+EXECUTE {init.longest.label}
+
+% Determine the longest label that will be needed
+ITERATE {longest.label.pass}
+
+% Begin the library and handle the preamble
+EXECUTE {begin.bib}
+
+% Create all bibliography entries
+ITERATE {call.type$}
+
+% Finalize the library
+EXECUTE {end.bib}