\begin{thebibliography}{Lam85}

\bibitem[DS88]{BisonReferenceManual}
Charles Donnelly and Richard Stallman.
\newblock {\em The Bison Reference Manual}.
\newblock The Free Software Foundation, 675 Massachusetts Ave., Cambridge MA,
  02139, 1988.

\bibitem[Lam85]{Lamport}
Leslie Lamport.
\newblock {\em LaTeX: A Document Preparation System}.
\newblock Addison-Wesley, 1985.

\bibitem[Sta86]{GNUEmacsManual}
Richard Stallman.
\newblock {\em The GNU Emacs Manual}.
\newblock The Free Software Foundation, 675 Massachusetts Ave., Cambridge MA,
  02139, 1986.

\bibitem[Sta88]{GDBManual}
Richard Stallman.
\newblock {\em The GDB Manual}.
\newblock The Free Software Foundation, 675 Massachusetts Ave., Cambridge MA,
  02139, 1988.

\end{thebibliography}
\begin{thebibliography}{Lam85}

\bibitem[DS88]{BisonReferenceManual}
Charles Donnelly and Richard Stallman.
\newblock {\em The Bison Reference Manual}.
\newblock The Free Software Foundation, 675 Massachusetts Ave., Cambridge MA,
  02139, 1988.

\bibitem[Lam85]{Lamport}
Leslie Lamport.
\newblock {\em LaTeX: A Document Preparation System}.
\newblock Addison-Wesley, 1985.

\bibitem[Sta86]{GNUEmacsManual}
Richard Stallman.
\newblock {\em The GNU Emacs Manual}.
\newblock The Free Software Foundation, 675 Massachusetts Ave., Cambridge MA,
  02139, 1986.

\bibitem[Sta88]{GDBManual}
Richard Stallman.
\newblock {\em The GDB Manual}.
\newblock The Free Software Foundation, 675 Massachusetts Ave., Cambridge MA,
  02139, 1988.

\end{thebibliography}
