% Copyright (C) 1990 Sake J. Hogeveen.

% This is ASTRON.STY, a LaTeX style for use with the BibTeX style ASTRON.BST.

% ASTRON.BST is an adaptation of APALIKE.BST by Oren Patashnik and Suzan King.

% This style produces citations in the `author-year' format, which is widely
% used among astronomical journals.
% It supports two forms of citation: the \cite command produces:  (Author, year)
% in the text; the \cite* command only:  (year) .

% The long an short citation trickery is adapted from NAMED.BST by
% Peter F. Patel-Schneider.

% 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

\@ifundefined{chapter}{\def\thebibliography#1{\section*{References\@mkboth
  {REFERENCES}{REFERENCES}}\list
  {\relax}{\setlength{\labelsep}{0em}
	\setlength{\itemindent}{-\bibhang}
	\setlength{\itemsep}{0pt}
	\setlength{\parsep}{0pt}
	\setlength{\leftmargin}{\bibhang}}
    \def\newblock{\hskip .11em plus .33em minus .07em}
    \sloppy\clubpenalty4000\widowpenalty4000
    \sfcode`\.=1000\relax}}%
{\def\thebibliography#1{\chapter*{Bibliography\@mkboth
  {BIBLIOGRAPHY}{BIBLIOGRAPHY}}\list
  {\relax}{\setlength{\labelsep}{0em}
	\setlength{\itemindent}{-\bibhang}
	\setlength{\itemsep}{0pt}
	\setlength{\parsep}{0pt}
	\setlength{\leftmargin}{\bibhang}}
    \def\newblock{\hskip .11em plus .33em minus .07em}
    \sloppy\clubpenalty4000\widowpenalty4000
    \sfcode`\.=1000\relax}}

\newlength{\bibhang}
\setlength{\bibhang}{1.4em}

\let\@internalcite\cite
\def\cite{\@ifstar{\citeyear}{\citefull}}
\def\citefull{\def\astroncite##1##2{##1, ##2}\@internalcite}
\def\citeyear{\def\astroncite##1##2{##2}\@internalcite}

\def\@citex[#1]#2{\if@filesw\immediate\write\@auxout{\string\citation{#2}}\fi
  \def\@citea{}\@cite{\@for\@citeb:=#2\do
    {\@citea\def\@citea{; }\@ifundefined
       {b@\@citeb}{{\bf ?}\@warning
       {Citation `\@citeb' on page \thepage \space undefined}}%
{\csname b@\@citeb\endcsname}}}{#1}}

\def\@cite#1#2{(#1\if@tempswa , #2\fi)}
\def\@biblabel#1{}