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+% Copyright (C) 1990 Sake J. Hogeveen.
+
+% This file contains the LaTeX source of the documentation for the BibTeX
+% style file ASTRON.BST and the complementary LaTeX style ASTRON.STY.
+
+% Copyright Notice:
+% The files ASTRON.BST, ASTRON.STY, ASTDOC.TEX, ASTDOC.BIB, EXAMPLE.TEX,
+% EXAMPLE.BIB, MNEMONIC.BIB, and TEMPLATE.BIB are a package.
+% You may copy and distribute them freely for non-commercial purposes,
+% provided that you keep the package together and this copyright notice
+% in tact.
+% You may not alter or modify the files; this helps to ensure that all
+% distributions of ASTRON.BST and related files are the same.
+% If you make any modifications, then you must give the files new names,
+% other than the present.
+% The author bears no responsibilities for errors in this document or
+% the software it describes; and shall not be held liable for any indirect,
+% incidental, or consequential damages.
+
+% If you find any bugs in the style files, or omissions in the documentation,
+% please report them to: E-mail A410SAKE@SARA.NL; UUCP: l42@nikhefh.nikhef.nl
+
+\documentstyle[titlepage,astron]{article}
+
+\textwidth 5.5in
+\textheight 8.5in
+\hoffset -.35in
+\voffset -.6in
+
+\setcounter{secnumdepth}{2}
+\setcounter{tocdepth}{3}
+
+\def\BibTeX{{\rm B\kern-.05em{\sc i\kern-.025em b}\kern-.08em\TeX }}
+
+\title{%{\huge\tt astron.bst} \bigskip \\
+ A \BibTeX\ Style for Astronomical Journals}
+\author{(for use with BibTeX 0.99c) \bigskip \\
+ Sake J. Hogeveen}
+\date{\vspace{.5in}
+ \fbox{\parbox{3in}{\small This is a preliminary version. Please
+ report any bugs in the style files, and errors or omissions in the
+ documentation to one of the E-mail addresses below.
+ This package is sent to several astronomical journals, with a request
+ for their official approval of its use.
+ Version 1.0 will hopefully contain a list of journals that have given
+ their consent.}}\vfil
+ \parbox{4.5 in}{\normalsize Copyright \copyright 1990, Sake J. Hogeveen.
+ The files {\tt astron.bst}, {\tt astron.sty}, {\tt astdoc.tex},
+ {\tt astdoc.bib}, {\tt mnemonic.bib}, {\tt example.bib}, {\tt example.tex},
+ and {\tt template.bib} are a package.
+ You may copy and distribute them freely for non-commercial purposes,
+ provided that you keep the package together and this copyright notice
+ in tact.
+ You may not alter or modify the files; this helps to ensure that all
+ distributions of {\tt astron.bst} and related files are the same.
+ If you make any modifications, then you must give the files new names,
+ other than the present. \\
+ The author bears no responsibilities for errors in this document or
+ the software it describes; and shall not be held liable for any indirect,
+ incidental, or consequential damages.}\vfil
+ \parbox{5.5 in}{\begin{center} \normalsize
+ Astronomical Institute `Anton Pannekoek', Roetersstraat 15,
+ 1018 {\sc wb} Amsterdam, \\ The Netherlands \medskip \\
+ E-mail: Earn/Internet: {\tt A410SAKE@SARA.NL};
+ UUCP: {\tt l42@nikhefh.nikhef.nl}\end{center}}}
+
+\begin{document}
+\maketitle
+\renewcommand{\BibTeX}{BibTeX}
+\renewcommand{\LaTeX}{LaTeX}
+\tableofcontents
+\newpage
+
+\section*{Introduction}
+\addcontentsline{toc}{section}{Introduction}
+
+This document describes the \BibTeX\ style {\tt astron.bst}.
+\BibTeX\ is a programme that makes it much easier to produce a list of
+references for papers that are prepared with \LaTeX, and it comes with
+nearly every distribution of \LaTeX.
+Consult your local \TeX{}nician if you cannot find it on the computer(s)
+you use.
+
+The {\tt astron.bst} style is designed to produce a list of references in
+the author-year format that is commonly used among astronomical journals.
+The style file produces references in the exact format of
+{\sl Astronomy and Astrophysics}, the European astronomical journal.
+However, the formats of the various astronomical journals (notably
+Monthly Notices of the Royal Astronomical Society, Astrophysics and
+Space Science, The Astronomical Journal, and The Astrophysical Journal)
+only differ in typographical details, such as punctuation and the use
+of italics.
+
+In the near future we may expect astronomical journals to accept
+source or {\sc dvi} files of papers prepared with \TeX\ and \LaTeX.
+It will be possible to use \BibTeX\ and the style {\tt astron.bst}
+presented here {\sl without restrictions\/} with any of the \LaTeX\ style
+files that may be distributed by the journals or their publishers.
+
+For some aspects of scientific publishing with \TeX\ and \LaTeX, see
+appendix~\ref{aspects}
+
+\section{\BibTeX}
+
+This documentation is not intended as an introduction to \BibTeX,
+nor to \LaTeX.
+You are assumed to be familiar with both.
+If you are not: \LaTeX\ is documented in its {\sl User's Guide and
+Reference Manual\/} by Leslie Lamport \cite*{lamport}.
+\BibTeX\ is documented by its author: Oren Patashnik \cite*{patashnik}.
+The manual comes with each distribution of \BibTeX.
+It explains how \BibTeX\ should be used, and how style files can be created
+or adapted.
+
+\BibTeX\ is also documented in section 4.2.3, `Using \BibTeX', and appendix~B,
+`The Bibliography Database', of the \LaTeX\ {\sl User's Guide}.
+If you only want to use existing bibliography styles, the
+information in the \LaTeX\ {\sl User's Guide and Reference Manual\/}
+\cite{lamport} is sufficient.
+
+\section{The `{\tt astron}' style files}
+
+With this package you should find the \BibTeX\ style file {\tt astron.bst}
+and the complementary \LaTeX\ style file {\tt astron.sty}.
+You should install both on the computer on which you run \LaTeX\ and
+\BibTeX.
+Preferably you should put the files in the directory where the standard
+and/or optional \LaTeX\ and \BibTeX\ style files are kept.
+If you are on a multi-user system and have no permission to write
+to these directories, ask your system manager to install them for you.
+If you are the only astronomer on the system, and hence the only user of
+the `{\tt astron}' style, you may also put the files in your working
+directory.
+
+\subsection{$\backslash${\tt cite} and $\backslash${\tt cite*}}
+
+Citations in the author-year format usually look like: `(Author, year)'.
+But sometimes the name of the author is part of the running text,
+and you want to make a citation look like: `\ldots{} Author (year)'.
+To allow for both forms of citations, {\tt astron.sty} provides two
+commands: \verb|\cite| and \verb|\cite*|.
+The command \verb|\cite{|{\it label\/}\verb|}| will produce the full
+citation `(Author, year)', while the command
+\verb|\cite*{|{\it label\/}\verb|}| will produce the short citation `(year)'.
+
+These commands are not standard \LaTeX\ (\LaTeX\ only provides the \verb|\cite|
+command).
+They are added to the vocabulary of any \LaTeX\ document style by including
+the `astron' option in your document style call, e.g.:
+\begin{quotation}
+ \noindent\verb|\documentstyle[11pt,astron]{article}|
+\end{quotation}
+where `{\tt 11pt}' and `{\tt article}' represent the document styles you
+chose to use.
+
+If you want to make a citation of an other format than the formats produced
+by \verb|\cite| or \verb|\cite*|, you will have to type the entire citation
+yourself and use the \verb|\nocite| command.
+The call `\verb|\nocite{|{\it label\/}\verb|}|' in your document will cause
+\LaTeX\ and \BibTeX\ to include the citation indicated by {\it label\/} in
+the list of references, but the \verb|\nocite| command will {\sl not\/}
+be replaced by the {\it key\/} text.
+
+\subsection{{\tt astron.bst} and {\tt astron.sty}}
+
+The style file {\tt astron.bst} causes \BibTeX\ to produce a
+{\it document\/}{\tt .bbl} file with a list of references according
+to the usual format:
+%
+\begin{quotation}
+\noindent \verb|\begin{thebibliography}{}| \\
+\verb|\bibitem[|{\it key}\verb|]{|{\it label}\verb|}|{\it bibliography entry} \\
+\indent $\vdots$ \\
+\verb|\end{thebibliography}|
+\end{quotation}
+%
+The {\it label\/} is, of course, the label which you use in the
+\verb|\cite{|{\it label\/}\verb|}| and \verb|\cite*{|{\it label\/}\verb|}|
+calls in your \LaTeX\ document, and by which \BibTeX\ recognizes entries
+in the {\it database\/}{\tt.bib} file.
+
+\noindent The style file {\tt astron.bst} causes \BibTeX\ to produce {\it key\/}s
+with the format: \verb|{|{\it Author\/}\verb|}{|{\it year\/}\verb|}|.
+The style file {\tt astron.sty} causes \LaTeX\ to replace a
+\verb|\cite{|{\it label\/}\verb|}| call by the text `(Author, year)',
+and a \verb|\cite*{|{\it label\/}\verb|}| call by the text `(year)'.
+Due to the definition of \verb|\@biblabel| in {\tt astron.sty}, the {\it key\/}
+is not printed in the actual list of references.
+
+\subsection{Required, optional, and ignored fields}
+\label{fields}
+
+The bibliography style `{\tt astron}' has its own ideas about which fields
+in an entry are required, optional or ignored.
+Astronomical journals make an effort of `economic' printing, which means
+that they leave everything out that is not absolutely necessary.
+
+The classes of the fields in each entry are tabulated in
+appendix~\ref{classes}.
+One thing I will give away here: in the `author-year' citation system
+it is obvious that {\tt author} and {\tt year} information is
+required for every entry.
+Remember that `required' means that \BibTeX\ issues a warning if the field
+is empty, i.e., if the information is not available in your
+{\it database\/}{\tt .bib} file.
+
+\section{Examples}
+
+The files {\tt example.bib} and {\tt example.tex} show what a bibliographic
+database file might look like, and demonstrate the use of the \verb|\cite|
+and \verb|\cite*| commands in various forms.
+
+\section{Abbreviations}
+\label{abbreviations}
+
+The file {\tt mnemonic.bib} contains a list of mnemonics which may
+be used in the `{\tt journal}' fields of the entries in the bibliographic
+database.
+If you want to use the mnemonics, you should include {\tt mnemonic.bib}
+into the \verb|\bibliography| call:
+%
+\begin{quotation}
+\noindent\verb|\bibliography{mnemonic,|{\it other bibliographic
+ database files\/}\verb|}|
+\end{quotation}
+%
+If you have an entry: `{\tt journal = aa}' (note: {\sl without\/}
+quotes or braces around `{\tt aa}'), then \BibTeX\ will cause the
+mnemonic to be replaced by the text {\it Astron.\ Astrophys.\/} in the
+final list of references.
+
+The list in appendix~\ref{mnemonics} contains the same journals and
+periodicals as section 001 `Periodicals' in
+{\sl Astronomy and Astrophysics Abstracts}, Vol.~49A \cite{burkhardt}.
+The abbreviations follow the recommendations of the ``International
+List of Periodical Title Word Abbreviations'', so you are strongly
+encouraged to use them.
+
+If you want to cite periodicals which are not in {\tt mnemonic.bib},
+or if you think you will never use 90\% of the mnemonics in the
+supplied file, you could create your own mnemonics file, and copy
+from {\tt mnemonic.bib} the abbreviations which you do use.
+
+\section{Maintaining the database}
+
+To setup and maintain bibliographic databases for \BibTeX, this package
+contains a file {\tt template.bib}, which contains templates of the
+entries with their required and optional fields (according to
+{\tt astron.bst}).
+If you want to add an entry to a database, you can copy the relevant
+template from {\tt template.bib} into your database file, and then
+complete the entry with the relevant information.
+
+I have used this method to maintain the databases for quite some time,
+and I find that it saves me from a lot of arduous typing, and many
+typing errors.
+
+\section{Credits}
+
+The \BibTeX\ and \LaTeX\ `{\tt astron}' styles are adaptations of the
+`{\tt apalike}' styles developed by Oren Patashnik and Suzan King.
+The \verb|\cite| and \verb|\cite*| trickery is adapted from
+`{\tt named.bst}' by Peter~F. Patel-Schneider.
+
+\bibliographystyle{astron}
+\bibliography{mnemonic,astdoc}
+
+\appendix
+
+\newpage
+\section{Aspects of publishing with \TeX\ and \LaTeX}
+\label{aspects}
+
+New developments, such as \TeX\ and \LaTeX, are about to radically change
+the conventional ways of scientific publishing.
+Experiments with the acceptance of papers prepared with \TeX\ or
+\LaTeX\ are already going on \cite{daniel}.
+
+The principle is simple and appealing.
+Authors prepare their papers with \TeX\ or \LaTeX, and send their manuscripts
+to the publishers on floppy disk or via electronic mail.
+A publisher runs \TeX\ or \LaTeX\ on the manuscript, and produces a
+(high quality) printable copy of the paper.
+The costly and time consuming steps of typesetting and proofreading
+would then be eliminated.
+
+But before everything will run smoothly, some aspects of scientific publishing
+with \TeX\ and \LaTeX\ will have to be considered, and some problems need to
+be addressed.
+
+\subsection{Generalized Mark-up}
+
+Although papers in the various scientific journals exhibit a great variety
+in typographical appearance, a common underlying structure can be recognized.
+The papers can be characterized by: a heading (with the title of the paper,
+and the author's names and affiliations); an abstract or summary; sections;
+tables; figures; equations; a list of references; and sometimes appendices.
+The typographical form of a paper is intended to support this structure.
+The typography is, in fact, derived from the structure, as becomes evident
+from the typographical instructions that are scribbled on to the oldfashioned
+typewriter written manuscripts by a desk editor.
+
+A desk editor recognizes the structural elements of a paper from the
+typography of the typewriter written manuscript.
+The author has {\sl implicitly\/} structured his manuscript by applying
+some rudimentary typography.
+The structure of a manuscript can be formalized, by asking the author to
+{\sl explicitly\/} state what comes next, e.g. like this:
+%
+\begin{quotation}
+\noindent\begin{verbatim}
+title: Gnats and Gnus again
+author: A.N. Author
+affiliation: The Gnats and Gnus Institute,
+ Somewhere Lane 15, Downtown, Inthecountry.
+abstract:
+ Some people get fed up with examples that are about Gnats and Gnus.
+ This paper brings about new information, which shows that Gnats and
+ Gnus are a species with such unexpected virtues, that the reader will
+ never be agonized again, but, to the contrary, cannot wait to learn
+ more about them.
+introduction:
+\end{verbatim}
+\par$\vdots$
+\end{quotation}
+%
+A desk editor could again scribble his remarks in this manuscript,
+to indicate to a typesetter what typographical form is required for
+each of the structural elements.
+The `scribbeling' of the desk editor is, by the way, called `mark-up'.
+An other desk editor, of a different journal, could also scribble
+in {\sl his\/} remarks, which would make sure that the typesetter
+applies the typographical rules of this other journal.
+
+So we have not only {\sl formalized\/} the mark-up of the paper, we
+have also made it independent of the typographical form.
+Mark-up which is independent of the typographical form is said to be
+{\sl generalized\/} mark-up.
+
+The idea of modern (scientific) publishing is that the author supplies
+a manuscript, which is marked-up employing a `Generalized Mark-up
+Language'\footnote{
+ In fact, there is at present an international effort being made of
+ the development of what is called the `Standard Generalized Mark-up
+ Language' (SGML).
+ SGML will be~/~is an ISO standard.
+ SGML will be mainly used by publishers and by organisations to maintain
+ large databases.
+
+ As an author you do not have to worry that you will yet again have
+ to learn something new: suppliers of word-processors will incorporate
+ SGML in their products, so you will produce SGML manuscripts without
+ knowing it.}.
+
+This manuscript can be processed by {\em any\/} publisher into the
+typographical format of a particular publication.
+The advantages of the concept are obvious: 1.~the author does not
+have to bother with typographical matters, and 2.~the publisher is
+completely in control of the appearance of a publication, just as he
+always has been.
+
+\subsection{\TeX}
+
+So how do \TeX\ and \LaTeX\ fit into this concept?
+Let us first look at \TeX, and then at \LaTeX.
+
+\TeX\ is a computerized typesetting system, geared towards the typesetting
+of manuscripts which contain a lot of mathematics.
+Like the traditional typesetting systems, \TeX\ requires information
+from the user about {\sl where\/} and {\sl how\/} things are to be put on
+paper.
+\TeX\ provides many basic commands, but these commands are hardly ever
+used directly.
+The commands are grouped in {\sl macros}, which perform (typographically)
+logical functions.
+Macros are grouped into {\sl macro packages}.
+\TeX\ comes with a standard macro package `{\tt plain.tex}', and it is this
+macro package that is used by most authors who say they use \TeX.
+
+However, this `plain' macro package still requires information from the
+user about where and how things are to be put on paper.
+And it is here that a problem arises.
+Because if `plain' \TeX\ were to be used for scientific publishing, it
+would mean that authors have to concern themselves with the layout and
+the typographical details of the journal(s) they are publishing in.
+Although publishers would not dare to doubt the scientific capabilities
+of authors, they have serious concerns about their qualities as typographers.
+And with good reason, as years of experience with `camera ready' manuscripts
+have shown.
+
+But, because \TeX\ actually is a computer programme, there are great powers
+hidden inside.
+By building on the `plain' macros, or by developing completely new ones, the
+concept of macros can be carried further, until a package is achieved which,
+to the user, looks like a `Generalized Mark-up Language'.
+
+\subsection{\LaTeX\ as a Generalized Mark-up Language}
+
+A \TeX\ macro package with the properties of a Generalized Mark-up Language
+has already been developed.
+It is called \LaTeX.
+With \LaTeX\ the author uses `generalized mark-up' commands such as
+`\verb|\title|', `\verb|\begin{abstract}|', `\verb|\section|',
+`\verb|\appendix|', which bear no relation to a particular typographical
+format at all.
+The typographical format of the final printed copy of a \LaTeX\ manuscript
+is determined by so-called `style files'.
+\LaTeX\ comes with four standard style files, which allow the user to
+produce typographically sound articles (papers), books, reports, and letters.
+But these style files may be replaced by others, to produce an entirely
+different typographical format of a document from the {\sl same\/}
+mark-up commands.
+Thus, if a publisher accepts the source text of a \LaTeX\ manuscript, he
+can convert it into printed output with almost any desired
+typographical format,
+{\sl without\/} changing the original text.
+
+\subsection{\TeX, and the `typewriter syndrome'}
+
+If you are an editor or a publisher, you will have met authors who
+say that they much prefer \TeX\ over \LaTeX.
+They try to convince you that they can do much more with it than can be
+done with \LaTeX.
+What they mean is, that they have more direct control of what the
+{\sl printed output\/} looks like, and hence, over the typography of their
+product.
+We should realize that authors who say they use \TeX, in fact use the
+`plain' macro package.
+Some 90\% of these authors use `plain' \TeX\ as a sophisticated typewriter.
+For instance, when they start a new section, they tell \TeX\ to leave some
+white space between the preceding text and the new section heading,
+switch to a different font, type the heading, leave some white space again,
+switch back to the font for the running text, and continue to type the
+next paragraph.
+
+This is all fine when an author types a manuscript for his own purposes,
+or one that will be typeset again by a professional typesetter.
+Of course, a publisher could provide a set of instructions which tell
+the author how everything should be formatted, just like the instructions
+that are provided for `camera ready' papers.
+But publishers know how well authors keep to these instructions, and many
+authors have nightmares about camera ready manuscripts, which cost them
+blood, sweat, tears, and far too much time to prepare.
+
+Furthermore, \TeX\ is not intended to be used in this way.
+When `plain' \TeX\ is used as a typewriter, not even 5\% of its potential
+capabilities are challenged.
+The design of \TeX\ allows it to be adapted to the structural and typographical
+demands of the publications of many, different branches of science, by
+means of the `macro' concept.
+For very specialized branches, special macro packages can be developed
+(and are developed, such as the $\cal AMS$\TeX\ package of the American
+Mathematical Society).
+Other branches, like astronomy, could do with a `general purpose' package,
+such as \LaTeX.
+
+Authors will have to adapt to the concept of Generalized Mark-up, and
+be cured from the `typewriter syndrome'.
+Only through generalized mark-up, the principle of directly publishing
+the manuscript provided by the author will work.
+And the benefits will be great:
+it allows the author to fully concentrate on the writing of the manuscript,
+without worries about the layout; it leaves the publisher in full
+control of the typographical appearance of his publications; and the
+time between submission and publication can be reduced considerably.
+
+\subsection{Consultation and education}
+
+Like with every beautiful concept, there are some practical hazards and
+problems involved in scientific publishing with \TeX\ and \LaTeX.
+The mark-up commands provided by \LaTeX\ do not cover every peculiarity
+you may have in scientific papers, and not all commands are strictly
+`generalized', i.e., some do have a direct typographical effect\footnote{
+ This is not a problem peculiar to \LaTeX, it is a problem that designers
+ of generalized mark-up languages are struggling with in general.}.
+%
+And then authors should use the proper commands for their mark-up, which
+they have to select from an overwhelming number of available commands.
+
+Publishers can provide special or optional style files, which add new
+mark-up commands to the \LaTeX\ vocabulary.
+But this has to be done very cautiously, because every new command means a
+deviation from standard \LaTeX, and requires extra attention from the
+authors.
+New commands should not be added without proper consultation of the
+community of authors that has to use a particular macro package.
+
+Authors will have to be educated about the proper mark-up of their papers.
+Experience at Springer-Verlag (Heidelberg) and Kluwer Academic Publishers
+(Dordrecht), with \TeX\ and \LaTeX\ manuscripts provided by authors, has
+shown that the much greater possibilities of these systems in comparison to
+the old typewriter, are only to often used in the wrong way.
+This means that \TeX\ and \LaTeX\ manuscripts need so much polishing and
+brushing up, that the effort involved equals or sometimes surpasses that
+of having the manuscript typeset in the traditional way.
+
+What authors have to learn about the mark-up of their papers, are rules
+that generally apply to the proper typesetting of mathematical texts.
+These rules are not dependent of a particular journal (although, of course,
+some branches of science may have their peculiarities, but these are then
+again common for the branch).
+Rules of proper typesetting are mentioned at many places in the
+{\sl TeX{}book\/} and in the {\sl \LaTeX\ User's Guide and Reference Manual}.
+But the learning of \TeX\ and \LaTeX\ is at present still a matter
+of teaching it yourself, and many authors seem to miss the good advice
+that is given.
+
+\subsection{Concluding remarks}
+
+The use of \TeX\ and \LaTeX\ for scientific publishing will only succeed
+if we adapt to the concept of `generalized mark-up'.
+Only in that way an author can fully concentrate on the writing of his
+manuscript, and leave the typographical intricacies to the publisher.
+Much has yet to be learned by everyone involved: authors, editors, and
+publishers.
+We can learn from each other: publishers can learn from authors what
+is wrong about their macro packages; authors can learn from publishers
+which rules of proper typesetting they violate.
+
+It would be a good thing if the processes of consultation and education
+were formalized in working groups, or something similar.
+I know there are publishers who are reluctant about formalized consultation,
+because they are afraid it slows down their efforts to get going with
+\TeX\ and \LaTeX.
+However, it is my opinion that they can only benefit from participating
+in some form of formalized consultation.
+The introduction of \TeX\ and \LaTeX\ will take time anyway, and by listening
+to the authors, publishers may be prevented from releasing macro packages
+which are not accepted by the authors.
+
+Authors could in such negotiations stress that they will only opt for some
+form of generalized mark-up, because working truly camera ready would
+take too much of their time.
+An inventory could be made of what authors have to learn about the proper
+mark-up of mathematical texts, and courses could be set up to educate the
+new generation of authors.
+I think that some time from now universities will provide introductory courses
+in \LaTeX, just as they are now providing introductory courses in computer
+programming. \smallskip \\
+
+In the mean time, \LaTeX\ users can enjoy this \BibTeX\ style, which extends
+the concept of generalized mark-up to such a horrifying thing as the
+compilation of a list of references.
+
+
+
+\newpage
+\section{Classes of the fields}
+\label{classes}
+
+Fields in the entries of the bibliographic database are attributed one of
+three classes: required, optional, or ignored.
+The table in this appendix lists the class of each field in each entry.
+See also Sect.~\ref{fields}.
+
+\newcommand{\R}{{\sl R}}
+\renewcommand{\O}{{\sl O}}
+\newcommand{\I}{--}
+
+\vfil
+\noindent\begin{center}
+{\bf Table \thesection.1:} Classes of the fields. \\
+(\R $=$ Required, \O $=$ Optional, \I $=$ Ignored) \medskip \\
+%
+\begin{tabular}{lccccccc} \hline
+ & \multicolumn{7}{c}{\bf Entry} \\
+{\bf Field} & article & book & booklet & conference$^a$ & inbook & incoll.$^b$
+ & inproc.$^c$ \\ \hline\hline
+address & \I & \O & \O & \O & \O & \O & \O \\
+annote & \I & \I & \I & \I & \I & \I & \I \\
+author & \R & \R & \R & \R & \R & \R & \R \\
+booktitle & \I & \I & \I & \R & \I & \R & \R \\
+chapter & \I & \I & \I & \I & \R & \O & \I \\
+crossref & \O & \O & \I & \O & \O & \O & \O \\
+edition & \I & \O & \I & \I & \O & \O & \I \\
+editor & \I & \O & \I & \O & \O & \O & \O \\
+howpublished & \I & \I & \O & \I & \I & \I & \I \\
+institution & \I & \I & \I & \I & \I & \I & \I \\
+journal & \R & \I & \I & \I & \I & \I & \I \\
+key & \O & \O & \O & \O & \O & \O & \O \\
+month & \I & \I & \I & \I & \I & \I & \I \\
+note & \O & \O & \O & \O & \O & \O & \O \\
+number & \I & \O & \I & \O & \O & \O & \O \\
+organisation & \I & \I & \I & \O & \I & \I & \O \\
+pages & \O & \I & \I & \O & \O & \O & \O \\
+publisher & \I & \R & \I & \O & \R & \R & \O \\
+school & \I & \I & \I & \I & \I & \I & \I \\
+series & \I & \O & \I & \O & \O & \O & \O \\
+title & \I & \R & \R & \I & \R & \I & \I \\
+type & \I & \I & \I & \I & \I & \I & \I \\
+volume & \O & \O & \I & \O & \O & \O & \O \\
+year & \R & \R & \R & \R & \R & \R & \R \\ \hline
+\end{tabular}
+\end{center}
+$^a$ `conference' is the same as `inproceedings' \\
+$^b$ incoll.\ $=$ incollection \\
+$^c$ inproc.\ $=$ inproceedings
+
+\newpage
+
+\null\vfil
+\noindent\begin{center}
+{\bf Table \thesection.1:} Classes of the fields ({\it continued\/}). \\
+(\R $=$ Required, \O $=$ Optional, \I $=$ Ignored) \medskip \\
+%
+\begin{tabular}{lccccccc} \hline
+ & \multicolumn{7}{c}{\bf Entry} \\
+{\bf Field} & manual & masters.$^d$ & misc & phd.$^e$ & proc.$^f$ & tech.$^g$
+ & unpubl.$^h$ \\ \hline\hline
+address & \O & \O & \I & \O & \O & \O & \I \\
+annote & \I & \I & \I & \I & \I & \I & \I \\
+author & \R & \R & \R & \R & \R & \R & \R \\
+booktitle & \I & \I & \I & \I & \I & \I & \I \\
+chapter & \I & \I & \I & \I & \I & \I & \I \\
+crossref & \I & \I & \I & \I & \I & \I & \I \\
+edition & \O & \I & \I & \I & \I & \I & \I \\
+editor & \I & \I & \I & \I & \O & \I & \I \\
+howpublished & \I & \I & \O & \I & \I & \I & \I \\
+institution & \I & \I & \I & \I & \I & \O & \I \\
+journal & \I & \I & \I & \I & \I & \I & \I \\
+key & \O & \O & \O & \O & \O & \O & \O \\
+month & \I & \I & \I & \I & \I & \I & \I \\
+note & \O & \O & \O & \O & \O & \O & \R \\
+number & \I & \I & \I & \I & \O & \I & \I \\
+organisation & \O & \I & \I & \I & \O & \I & \I \\
+pages & \I & \I & \I & \I & \I & \I & \I \\
+publisher & \I & \I & \I & \I & \O & \I & \I \\
+school & \I & \R & \I & \R & \I & \I & \I \\
+series & \I & \I & \I & \I & \O & \I & \I \\
+title & \R & \I & \O & \I & \R & \R & \R \\
+type & \O & \O & \O & \O & \O & \O & \O \\
+volume & \I & \I & \I & \I & \O & \I & \I \\
+year & \R & \R & \R & \R & \R & \R & \R \\ \hline
+\end{tabular}
+\end{center}
+$^d$ masters.\ $=$ mastersthesis \\
+$^e$ phd.\ $=$ phdthesis \\
+$^f$ proc.\ $=$ proceedings \\
+$^g$ tech.\ $=$ techreport \\
+$^h$ unpubl.\ $=$ unpublished
+
+\newpage
+\section{Changing the style files yourself}
+
+The `{\tt astron}' bibliography style has been designed to meet the
+requirements of astronomical journals.
+Maybe you are working on documents which could do with about the same
+documentstyle, but not quite.
+Then you may want to modify the `{\tt astron}' styles to your needs.
+To help you on your way, here is a summary of what happens in each style
+file.
+
+You do remember to name modified style files anything other than
+{\tt astron.bst} or {\tt astron.sty}, don't you?
+
+\subsection{{\tt astron.bst}}
+
+The style {\tt astron.bst} causes \BibTeX\ to create a bibliography file
+which looks like:
+%
+\begin{quotation}
+\noindent \verb|\begin{thebibliography}{}| \\
+\verb|\bibitem[|{\it key}\verb|]{|{\it label}\verb|}|{\it bibliography entry} \\
+\indent $\vdots$ \\
+\verb|\end{thebibliography}|
+\end{quotation}
+%
+The {\it key\/} is formatted from the {\tt author} and {\tt year} entries
+in the bibliographic database.
+It looks like: \verb|{|{\it Author\/}\verb|}{|{\it year\/}\verb|}|.
+
+The {\it bibliography entry\/} is formatted from the required and optional
+information in the fields of an entry, like {\tt author}, {\tt year},
+{\tt title}, {\tt volume}, {\tt pages}, et cetera.
+According to the definitions in {\tt astron.bst}, \BibTeX\ takes care of
+the typographical intricacies of the {\it bibliography entry}, such
+as punctuation, italics for journal names and booktitles, boldface for
+journal volumes, etc.
+
+As an example, here is what {\tt astron.bst} made \BibTeX\ make of
+\verb|\cite{lamport}| in this document:
+%
+\begin{quotation}
+\noindent\begin{verbatim}
+\bibitem[\protect\astroncite{Lamport}{1986}]{lamport}
+Lamport, L.: 1986,
+\newblock {\em LaTeX, A Document Preparation System},
+\newblock Addison-Wesley, Reading, Massachusetts
+\end{verbatim}
+\end{quotation}
+
+\subsection{{\tt astron.sty}}
+
+The style file {\tt astron.sty} is a \LaTeX\ style file.
+It defines the \verb|\cite| and \verb|\cite*| commands such that
+\verb|\cite{|{\it label\/}\verb|}| is replaced by `(Author, year)'
+in the running text, and \verb|\cite*{|{\it label\/}\verb|}| by
+`(year)'.
+
+It also defines the {\tt thebibliography} environment.
+It causes the text `{\bf References}' to be produced as the heading of
+the list of references in `{\tt article}\,s', and `{\bf Bibliography}'
+as the heading in `{\tt report}\,s' and `{\tt book}\,s'
+
+The {\tt thebibliography} environment is defined in terms of the
+\LaTeX\ `{\tt list}' environment, in which the items are preceded
+by `\verb|\bibitem|'.
+All parameters related to the `{\tt list}' environment, such as
+`{\tt itemsep}', `{\tt leftmargin}', etc., are set at the
+\verb|\begin{thebibliography}| call. \medskip \\
+%
+To summarize in brief: the \BibTeX\ style {\tt astron.bst} takes care
+of the typographical details of each item in the bibliography;
+the \LaTeX\ style {\tt astron.sty} takes care of the global
+typographical appearance of the bibliography.
+
+\twocolumn
+\section{Mnemonics}
+\label{mnemonics}
+
+This appendix lists the mnemonics by which the abbreviations of journal
+names may be called in the {\tt journal} fields of the entries in the
+bibliographic database.
+See also Sect.~\ref{abbreviations}. \medskip \\
+
+% This file contains the abbreviations for journal names.
+% From: Astronomy and Astrophysics Abstracts, 1990, Vol. 49A.
+
+\newcommand{\printba}[2]{\noindent#2 \dotfill\ {\tt #1}\par}
+\frenchspacing
+\footnotesize
+
+\sloppy
+\printba{aao}{AAO Newsl.}
+\printba{aavso}{AAVSO Newsl.}
+\printba{acta}{Acta Astron.}
+\printba{aaguv}{Acta Astron. Geophys. Univ. Comenianae}
+\printba{actastsin}{Acta Astron. Sin.}
+\printba{actapsin}{Acta Astrophys. Sin.}
+\printba{agg}{Acta Geod. Geophys.}
+\printba{ags}{Acta Geophys. Sin.}
+\printba{appsb}{Acta Phys. Pol., Ser. B}
+\printba{atash}{Acta Tech. Acad. Sci. Hung.}
+\printba{advp}{Adv. Phys.}
+\printba{advsr}{Adv. Space Res.}
+\printba{aip}{AIP Conf. Proc.}
+\printba{aavsob}{Am. Assoc. Variable Star Obs. Bull.}
+\printba{aavsoc}{Am. Assoc. Variable Star Obs. Circ.}
+\printba{amjp}{Am. J. Phys.}
+\printba{aatar}{Anglo--Aust. Telesc., Annu. Rep.}
+\printba{ag}{Ann. Geophys.}
+\printba{apl}{Ann. Phys. (Leipzig)}
+\printba{apny}{Ann. Phys. (N.Y.)}
+\printba{app}{Ann. Phys. (Paris)}
+\printba{ao}{Appl. Opt.}
+\printba{appl}{Appl. Phys. Lett.}
+\printba{apb}{Appl. Phys., B}
+\printba{as}{Appl. Spectrosc.}
+\printba{ahes}{Arch. Hist. Exact Sci.}
+\printba{archuk}{Archeoastronomy (U.K.)}
+\printba{asbts}{Archenhold--Sternw. Berlin--Treptow, Sonderdr.}
+\printba{asbtvs}{Archenhold--Sternw. Berlin--Treptow, Vortr. Schr.}
+\printba{aonaicnl}{Arecibo Obs./NAIC, Newsl.}
+\printba{artsat}{Artif. Satell.}
+\printba{aiisao}{Astrofiz. Issled. Izv. Spets. Astrofiz. Obs.}
+\printba{af}{Astrofizika}
+\printba{aa}{Astron. Astrophys.}
+\printba{aar}{Astron. Astrophys. Rev.}
+\printba{aas}{Astron. Astrophys. Suppl. Ser.}
+\printba{abco}{Astron. Bull. (Carter Obs.)}
+\printba{agas}{Astron. Ges., Abstr. Ser.}
+\printba{asther}{Astron. Her.}
+\printba{aiubc}{Astron. Inst. Univ. Brno, Contrib.}
+\printba{astj}{Astron. J.}
+\printba{an}{Astron. Nachr.}
+\printba{astnow}{Astron. Now}
+\printba{astraum}{Astron. Raumfahrt}
+\printba{astriha}{Astron. Rechen-Inst.Heidelb., Mitt., Ser. A}
+\printba{astrihb}{Astron. Rechen-Inst.Heidelb., Mitt., Ser. B}
+\printba{astschu}{Astron. Sch.}
+\printba{asttid}{Astron. Tidsskr.}
+\printba{asttsir}{Astron. Tsirk.}
+\printba{astvest}{Astron. Vestn.}
+\printba{astzh}{Astron. Zh.}
+\printba{astuai}{Astronomia UAI}
+\printba{astie}{Astronomie}
+\printba{asty}{Astronomy}
+\printba{apj}{Astrophys. J.}
+\printba{apjl}{Astrophys. J., Lett.}
+\printba{apjss}{Astrophys. J., Suppl. Ser.}
+\printba{aplc}{Astrophys. Lett. Commmun.}
+\printba{apss}{Astrophys. Space. Sci.}
+\printba{ap}{Astrophysics}
+\printba{aanlsor}{Atti Accad. Naz. Lincei, Ser. Ottava, Rend.}
+\printba{ajast}{Aust. J. Astron.}
+\printba{ajp}{Aust. J. Phys.}
+\printba{bavm}{BAV Mitt.}
+\printba{bavr}{BAV Rundbrief}
+\printba{bbsag}{BBSAG Bull.}
+\printba{bestarnl}{Be Star Newsl.}
+\printba{bildw}{Bild Wiss.}
+\printba{bipm}{BIPM Circ. T}
+\printba{boaumkt}{Biul. Obs. Astron. Uniw. M. Kopernika Toruniu}
+\printba{boe}{Bol. Obs. Ebro}
+\printba{broa}{Bol. ROA}
+\printba{blm}{Boundary-Layer Meteorol.}
+\printba{boop}{Boyden Obs., Occas. Publ.}
+\printba{bastac}{Br. Astron. Assoc. Circ.}
+\printba{bjp}{Bulg. J. Phys.}
+\printba{baas}{Bull. Am. Astron. Soc.}
+\printba{baps}{Bull. Am. Phys. Soc.}
+\printba{bafoev}{Bull. Assoc. Fr. Obs. Etoiles Variables}
+\printba{bastic}{Bull. Astron. Inst. Czech.}
+\printba{basi}{Bull. Astron. Soc. India}
+\printba{bcao}{Bull. Crimean Astrophys. Obs.}
+\printba{bgsi}{Bull. Geogr. Surv. Inst.}
+\printba{bicds}{Bull. Inf. Cent. Donn\'ees Stellaires}
+\printba{boab}{Bull. Obs. Astron. Belgr.}
+\printba{crassgvs}{C. R. Acad. Sci., S\'er. G\'en., Vie Sci.}
+\printba{crassii}{C. R. Acad. Sci., II}
+\printba{cjp}{Can. J. Phys.}
+\printba{cm}{Celest. Mech.}
+\printba{cassos}{Cent. Astron. Sci. Spat., Obs. Sol.}
+\printba{cent}{Centaurus}
+\printba{cpl}{Chem. Phys. Lett.}
+\printba{chinaa}{Chin. Astron. Astrophys.}
+\printba{chinp}{Chin. Phys.}
+\printba{chinpl}{Chin. Phys. Lett.}
+\printba{ciel}{Ciel}
+\printba{cielt}{Ciel Terre}
+\printba{ccotl}{Circ. Czech. Obs. Time Lattiude}
+\printba{cinf}{Circ. Inf.}
+\printba{ctls}{Circ. Time Latitude Serv.}
+\printba{cqg}{Classical Quantum Gravity}
+\printba{cast}{Comments Astrophys.}
+\printba{cnpp}{Comments Nucl. Part. Phys.}
+\printba{cppcf}{Comments Plasma Phys. Controlled Fusion}
+\printba{cfsua}{Commun. Fac. Sci. Univ. Ankara, Ser. A2, A3}
+\printba{cko}{Commun. Konkoly Obs.}
+\printba{cmp}{Commun. Math. Phys.}
+\printba{culo}{Commun. Univ. Lond. Obs.}
+\printba{comp}{Comput. Phys.}
+\printba{compcom}{Comput. Phys. Commun.}
+\printba{cp}{Contemp. Phys.}
+\printba{caosp}{Contrib. Astron. Obs. Skalnat\'e Pleso}
+\printba{cap}{Contrib. Atmos. Phys.}
+\printba{cdaut}{Contrib. Dep. Astron., Univ. Tokyo}
+\printba{clo}{Contrib. Lick Obs.}
+\printba{cncopb}{Contrib. Nicholas Copernicus Obs. Planetarium Brno}
+\printba{cnjro}{Contrib. Nizamiah Japal-Rangapur Obs.}
+\printba{cpp}{Contrib. Plasma Phys.}
+\printba{cvvo}{Contrib. Van Vleck Obs.}
+\printba{cr}{Cosmic Res.}
+\printba{cryo}{Cryogenics}
+\printba{czjp}{Czech. J. Phys., Sect. B}
+\printba{drho}{Data Rep. Hydrogr. Obs., Ser. Astron. Geod.}
+\printba{dgkbawb}{Dtsch. Geod. Komm. Bayer. Akad. Wiss., Reihe B}
+\printba{dgkbawc}{Dtsch. Geod. Komm. Bayer. Akad. Wiss., Reihe C}
+\printba{dgkbawe}{Dtsch. Geod. Komm. Bayer. Akad. Wiss., Reihe E}
+\printba{epsl}{Earth Planet. Sci. Lett.}
+\printba{erb}{Earth Rotation Bull.}
+\printba{emp}{Earth, Moon, Planets}
+\printba{esrev}{Earth--Sci. Rev.}
+\printba{esab}{ESA Bull.}
+\printba{esaiuenl}{ESA IUE Newsl.}
+\printba{esaj}{ESA J.}
+\printba{esoar}{ESO Ann. Rep.}
+\printba{ejp}{Eur. J. Phys.}
+\printba{epl}{Europhys. Lett.}
+\printba{epn}{Europhys. News}
+\printba{expast}{Exp. Astron.}
+\printba{fiz}{Fizika}
+\printba{fortp}{Fortschr. Phys.}
+\printba{fp}{Found. Phys.}
+\printba{funcp}{Fundam. Cosmic Phys.}
+\printba{gaab}{G.~A.A.B.}
+\printba{gast}{G. Astron.}
+\printba{gem}{Gemini}
+\printba{grg}{Gen. Relativ. Gravitation}
+\printba{gca}{Geochim. Cosmochim. Acta}
+\printba{ga}{Geomagn. Aehron.}
+\printba{gafd}{Geophys. Astrophys. Fluid Dyn.}
+\printba{gj}{Geophys. J.}
+\printba{grl}{Geophys. Res. Lett.}
+\printba{geo}{Geophysics}
+\printba{geos}{GEOS Circ.}
+\printba{gbg}{Gerlands Beitr. Geophys.}
+\printba{heav}{Heavens}
+\printba{hpa}{Helv. Phys. Acta}
+\printba{hepnp}{High Energ. Phys. Nucl. Phys.}
+\printba{hob}{Hvar Obs. Bull.}
+\printba{hi}{Hyperfine Interact.}
+\printba{iappp}{I.A.P.P.P. Commun.}
+\printba{iauc}{IAU Circ.}
+\printba{iauib}{IAU Inf. Bull.}
+\printba{icarus}{Icarus}
+\printba{i3etm}{IEEE Trans. Magn.}
+\printba{i3etns}{IEEE Trans. Nucl. Sci.}
+\printba{i3etps}{IEEE Trans. Plasma Sci.}
+\printba{iersbb}{IERS Bull. B}
+\printba{iersba}{IERS Bull.--A}
+\printba{ijpap}{Indian J. Pure Appl. Phys.}
+\printba{ijrsp}{Indian J. Radio Space Phys.}
+\printba{ibvs}{Inf. Bull. Variable Stars}
+\printba{iaatub}{Inst. Astron. Astrophys. Tech. Univ. Berlin, Mitt.}
+\printba{iag}{Inst. Astron. Geod., Univ. Madr., Publ.}
+\printba{ia}{Inst. Astron., Univ. Camb., Annu. Rep.}
+\printba{icq}{Int. Comet Q.}
+\printba{ijimw}{Int. J. Infrared Millimeter Waves}
+\printba{ijmp}{Int. J. Mod. Phys. A}
+\printba{ijtp}{Int. J. Theor. Phys.}
+\printba{ip}{Inverse Probl.}
+\printba{iastj}{Ir. Astron. J.}
+\printba{iris}{IRIS Bull. A}
+\printba{iskz}{Issled. Solntsa Krasnykh Zvezd}
+\printba{intsa}{Itogi Nauki Tekh., Ser. Astron.}
+\printba{intsppk}{Itogi NAuki Tekh., Ser. Plazmennye Protsessy Kosmose}
+\printba{iaoe}{Izv. Astron. Obs. Ehngel'gardt.}
+\printba{ikao}{Izv. Krym. Astrofiz. Obs.}
+\printba{ivuzr}{Izv. Vyssch. Uchebn. Zaved., Radiofiz.}
+\printba{jasa}{J. Acoust. Soc. Am.}
+\printba{jaavso}{J. Am. Assoc. Variable Star Obs.}
+\printba{jam}{J. Appl. Meteorol.}
+\printba{jap}{J. Appl. Phys.}
+\printba{jastf}{J. Astron. Fr.}
+\printba{japast}{J. Astrophys. Astron.}
+\printba{jas}{J. Atmos. Sci.}
+\printba{jatp}{J. Atmos. Terr. Phys.}
+\printba{jbasta}{J. Br. Astron. Assoc.}
+\printba{jbis}{J. Br. Interplanet. Soc.}
+\printba{jcp}{J. Chem. Phys.}
+\printba{jcomp}{J. Comp. Phys.}
+\printba{jel}{J. Electrostat.}
+\printba{jfseu}{J. Fac Sci., Ege Univ., Ser. A}
+\printba{jfm}{J. Fluid Mech.}
+\printba{jgr}{J. Geophys. Res.}
+\printba{jhast}{J. Hist. Astron.}
+\printba{jms}{J. Mater. Sci.}
+\printba{jmp}{J. Math. Phys.}
+\printba{jmo}{J. Mod. Opt.}
+\printba{jop}{J. Opt. (Paris)}
+\printba{josaa}{J. Opt. Soc. Am. A}
+\printba{josab}{J. Opt. Soc. Am. B}
+\printba{jp}{J. Phys.}
+\printba{jpa}{J. Phys. A}
+\printba{jpb}{J. Phys. B}
+\printba{jpd}{J. Phys. D}
+\printba{jpe}{J. Phys. E}
+\printba{jpg}{J. Phys. G}
+\printba{jpsj}{J. Phys. Soc. Jpn.}
+\printba{jpp}{J. Plasma Phys.}
+\printba{jqsrt}{J. Quant. Spectrosc. Radiat. Transfer}
+\printba{jrasc}{J. R. Astron. Soc. Can.}
+\printba{jsp}{J. Stat. Phys.}
+\printba{jvst}{J. Vac. Sci. Technol., A}
+\printba{jetpl}{JETP Lett.}
+\printba{jhatd}{Johns Hopkins APL Tech. Dig.}
+\printba{jjap1}{Jpn. J. Appl. Phys., Part 1}
+\printba{jjap2}{Jpn. J. Appl. Phys., Part 2}
+\printba{kai}{Kapteyn Astron. Inst., Annu. Rep.}
+\printba{kexto}{Kexue Tongbao}
+\printba{kfnt}{Kinematika Fiz. Nebesn. Tel}
+\printba{kob}{Kodaikanal Obs. Bull.}
+\printba{kt}{Komet. Tsirk.}
+\printba{ki}{Kosm. Issled.}
+\printba{koz}{Kozmos}
+\printba{kpm}{KPM}
+\printba{lo}{Laser Optoelektron.}
+\printba{latc}{Latitude Circ.}
+\printba{lest}{LEST Found., Annu. Rep.}
+\printba{lmp}{Lett. Math. Phys.}
+\printba{lob}{Lick Obs. Bull.}
+\printba{mg}{Manuscr. Geod.}
+\printba{ml}{Mater. Lett.}
+\printba{mrb}{Mater. Res. Bull.}
+\printba{mfs}{Mem. Fac. Sci., Kyoto Univ., Ser. Phys., Astrophys., Geophys., Chem.}
+\printba{msai}{Mem. Soc. Astron. Ital.}
+\printba{merc}{Mercury}
+\printba{mess}{Messenger}
+\printba{met}{Meteoritics}
+\printba{metka}{Meteoritika}
+\printba{metro}{Metrologica}
+\printba{mpb}{Minor Planet Bull.}
+\printba{mpc}{Minor Planet Circ.}
+\printba{masbt}{Mitt. Archenold--Sternw. Berlin Treptow}
+\printba{mag}{Mitt. Astron. Ges.}
+\printba{mlotud}{Mitt. Lohrmann--Obs., Tech. Univ. Dresden}
+\printba{mss}{Mitt. Sternw. Sonneberg}
+\printba{mvs}{Mitt. Ver{\"a}nderliche Sterne}
+\printba{mzpe}{Mitt. Zentralinst. Phys. Erde}
+\printba{mpla}{Mod. Phys. Lett. A}
+\printba{mn}{Mon. Not. R. Astron. Soc.}
+\printba{mnassa}{Mon. Notes Astron. Soc. S. Afr.}
+\printba{nint}{Nablyud. Iskusstv. Nebesn. Tel.}
+\printba{nogb}{Nachr. Olbers--Ges. Bremen}
+\printba{naoj}{Natl. Astron. Obs. (Jpn.), Repr.}
+\printba{ng}{Natl. Geogr.}
+\printba{nraoa}{Natl. Radio Astron. Obs., Repr., Ser. A}
+\printba{nraob}{Natl. Radio Astron. Obs., Repr., Ser. B}
+\printba{nat}{Nature}
+\printba{natwis}{Naturwissenschaften}
+\printba{ni}{Nauchn. Inf.}
+\printba{nlasny}{News Lett. Astron. Soc. N.Y.}
+\printba{nrodaour}{Nizamiah Rangapur Obs. Dep. Astron., Osmania Univ., Repr.}
+\printba{nraow}{NRAO Workshop}
+\printba{nimpra}{Nucl. Instrum. Methods Phys. Res., Sect. A}
+\printba{nimprb}{Nucl. Instrum. Methods Phys. Res., Sect. B}
+\printba{npa}{Nucl. Phys. A}
+\printba{npb}{Nucl. Phys. B, Part. Phys.}
+\printba{nca}{Nuovo Cimento A}
+\printba{ncb}{Nuovo Cimento B}
+\printba{ncc}{Nuovo Cimento C}
+\printba{ot}{Obs. Trav.}
+\printba{obs}{Observatory}
+\printba{onl}{Occultation Newsl.}
+\printba{ozvp}{{\"O}sterr. Z. Vermessungswes. Photogramm.}
+\printba{oc}{Opt. Commun.}
+\printba{oe}{Opt. Eng.}
+\printba{olt}{Opt. Laser Technol.}
+\printba{ol}{Opt. Lett.}
+\printba{on}{Opt. News}
+\printba{os}{Opt. Spectrosc.}
+\printba{optik}{Optik}
+\printba{ofeb}{Origins Life Evol. Biosphere}
+\printba{orion}{Orion}
+\printba{orione}{Orione}
+\printba{oac}{Oss. Astrofis. Catania, Pubbl.}
+\printba{pz}{Perem. Zvezdy}
+\printba{pb}{Phys. Bl.}
+\printba{pcm}{Phys. Chem. Miner.}
+\printba{pfa}{Phys. Fluids, A}
+\printba{pfb}{Phys. Fluids, B}
+\printba{pla}{Phys. Lett. A}
+\printba{plb}{Phys. Lett. B}
+\printba{pr}{Phys. Rep.}
+\printba{pra}{Phys. Rev. A}
+\printba{prb}{Phys. Rev. B}
+\printba{prc}{Phys. Rev. C}
+\printba{prd}{Phys. Rev. D}
+\printba{prl}{Phys. Rev. Lett.}
+\printba{ps}{Phys. Scr.}
+\printba{ptch}{Phys. Teach.}
+\printba{ptod}{Phys. Today}
+\printba{pha}{Physica A}
+\printba{phb}{Physica B}
+\printba{phd}{Physica D}
+\printba{paz}{Pis'ma Astron. Zh.}
+\printba{pss}{Planet. Space Sci.}
+\printba{ppcf}{Plasma Phys. Controlled Fusion}
+\printba{pa}{Postepy Astron.}
+\printba{pram}{Pram\~{a}na}
+\printba{pri}{Priroda}
+\printba{pasa}{Proc. Astron. Soc. Aust.}
+\printba{pi3e}{Proc. IEEE}
+\printba{prsl}{Proc. R. Soc. London, Ser. A}
+\printba{posp}{Proceedings of SPIE}
+\printba{past}{Prog. Astron.}
+\printba{ptp}{Prog. Theor. Phys.}
+\printba{paicas}{Publ. Astron. Inst. Czech. Acad. Sci.}
+\printba{pasj}{Publ. Astron. Soc. Jpn.}
+\printba{pasp}{Publ. Astron. Soc. Pac.}
+\printba{pbao}{Publ. Beijing Astron. Obs.}
+\printba{pdaub}{Publ. Dep. Astron., Univ. Beogr.}
+\printba{pdao}{Publ. Dom. Astrophys. Obs.}
+\printba{pnlaoj}{Publ. Natl. Astron. Obs. Jpn.}
+\printba{ppmo}{Publ. Purple Mt. Obs.}
+\printba{psao}{Publ. Shaanxi Astron. Obs.}
+\printba{pscds}{Publ. Sp\'ec. Cent. Donn\'ees Stellaires}
+\printba{pyo}{Publ. Yunnan Obs.}
+\printba{pag}{Pure Appl. Geophys.}
+\printba{qbsa}{Q. Bull. Sol. Act.}
+\printba{qjras}{Q. J. R. Astron. Soc.}
+\printba{rad}{Radiant}
+\printba{rsci}{Radio Sci.}
+\printba{reche}{Recherche}
+\printba{rpp}{Rep. Prog. Phys.}
+\printba{ra}{Rev. Astron.}
+\printba{rg}{Rev. Geophys.}
+\printba{rmf}{Rev. Mex. Fis.}
+\printba{rmp}{Rev. Mod. Phys.}
+\printba{rrp}{Rev. Roum. Phys.}
+\printba{rsi}{Rev. Sci. Instrum.}
+\printba{rnc}{Riv. Nuovo Cimento}
+\printba{rh}{\v{R}\'{\i}\v{s}e hv\v{e}zd}
+\printba{saaoar}{S. Afr. Astron. Obs., Annu. Rep.}
+\printba{saaoc}{S. Afr. Astron. Obs., Circ.}
+\printba{saaon}{SAAO Newsl.}
+\printba{sciam}{Sci. Am.}
+\printba{scch}{Sci. China, Ser. A}
+\printba{srtu}{Sci. Rep. T\^{o}hoku Univ., Eighth Ser.}
+\printba{sc}{Science}
+\printba{sar}{Sendai Astron. Rap.}
+\printba{st}{Sidereal Times}
+\printba{sky}{Sky Telesc.}
+\printba{sbaavso}{Sol. Bull. (AAVSO)}
+\printba{se}{Sol. Energy}
+\printba{sp}{Sol. Phys.}
+\printba{srd}{Sol. Radio Data}
+\printba{ssres}{Sol. Syst. Res.}
+\printba{sdb}{Soln. Dannye, Byull.}
+\printba{sonne}{Sonne}
+\printba{sbo}{Soobshch. Byurak. Obs.}
+\printba{ssao}{Soobshch. Spets. Astrofiz. Obs.}
+\printba{sost}{South. Stars}
+\printba{sa}{Sov. Astron.}
+\printba{sal}{Sov. Astron. Lett.}
+\printba{sjot}{Sov. J. Opt. Technol.}
+\printba{spd}{Sov. Phys. -- Dokl.}
+\printba{spj}{Sov. Phys. -- JETP}
+\printba{spu}{Sov. Phys. -- Usp.}
+\printba{space}{Space}
+\printba{ssr}{Space Sci. Rev.}
+\printba{stsi}{Space Telesc. Sci. Inst., Newsl.}
+\printba{sf}{Spaceflight}
+\printba{sterne}{Sterne}
+\printba{sw}{Sterne Weltraum}
+\printba{sb}{Sternenbote}
+\printba{strlast}{Strolling Astron.}
+\printba{sgg}{Stud. Geophys. Geod.}
+\printba{taot}{Tartu Astrof{\"u}{\"u}s. Obs. Teated}
+\printba{tect}{Tectonophysics}
+\printba{tellus}{Tellus, Ser. A}
+\printba{tmf}{Teor. Mat. Fiz.}
+\printba{tp}{Theor. Pap.}
+\printba{tsb}{Time Serv. Bull.}
+\printba{tmnr}{Tokyo Meteor Network Rep.}
+\printba{tai}{Tsirk. Astron. Inst. (Tashkent)}
+\printba{ufz}{Ukr. Fiz. Zh.}
+\printba{ucla}{Universe Classroom}
+\printba{uao}{Upps. Astron. Obs., Rep.}
+\printba{urania}{Urania}
+\printba{usnoc}{U.S. Nav. Obs., Circ.}
+\printba{usnos4}{U.S. Nav. Obs., Ser. 4}
+\printba{ufn}{Usp. Fiz. Nauk}
+\printba{vsb}{Variable Star Bull.}
+\printba{vasiona}{Vasiona}
+\printba{varih}{Ver{\"o}ff. Astron. Rechen--Inst. Heidelb.}
+\printba{vzpe}{Ver{\"o}ff. Zentralinst. Phys. Erde}
+\printba{vesmir}{Vesm\'{\i}r}
+\printba{vansssr}{Vestn. Akad. Nauk SSSR}
+\printba{vku}{Vestn. Kiev. Univ., Astron.}
+\printba{va}{Vistas Astron.}
+\printba{wgn}{WGN}
+\printba{wztud}{Wiss. Z. Tech. Univ. Dresden}
+\printba{yama}{Yamamoto Circ.}
+\printba{zamp}{Z. Angew. Math. Phys.}
+\printba{zna}{Z. Naturforsch., A}
+\printba{zpa}{Z. Phys., A}
+\printba{zpc}{Z. Phys., C}
+\printba{zv}{Zemlya Vselennaya}
+\printba{zenit}{Zenit}
+\printba{zetf}{Zh. Ehksp. Teor. Fiz.}
+
+\end{document}