Dear Dimitri,
Doxygen 1.2.18-20021030 appears to translate things like
-------------------------- <DL>
<DT> [BGP99] </DT> <DD> ... --------------------------
into LaTeX like
-------------------------- \begin{description} \item[[BGP99] ] ... --------------------------
The problem is that [ and ], in LaTeX, delimit math display mode so that the translation is not valid. I would suggest to translate
<DT> something </DT>
to
\item[\hbox{latex(something)}]
where latex(something) encodes all the required escaping (remembering that `[' and `]' need not be escaped). To see why the \hbox (or something with similar effect) is required, try running latex on, e.g.,
\documentclass{article} \begin{document} \begin{itemize} \item[\hbox{[a]}] b \item[[a]] b \end{itemize} \end{document}
All the best
Roberto