astron.bst and astron.sty

The style file astron.bst causes BibTeX to produce a document.bbl file with a list of references according to the usual format:

\begin{thebibliography}{}
\bibitem[key]{label}bibliography entry
$\vdots$
\end{thebibliography}
The label is, of course, the label which you use in the \cite{label} and \cite*{label} calls in your LaTeX document, and by which BibTeX recognizes entries in the database.bib file.

The style file astron.bst causes BibTeX to produce keys with the format: {Author}{year}. The style file astron.sty causes LaTeX to replace a \cite{label} call by the text `(Author, year)', and a \cite*{label} call by the text `(year)'. Due to the definition of \@biblabel in astron.sty, the key is not printed in the actual list of references.