1\begin{thebibliography}{Wielemaker \& Anjewierden, 1992}
2
3\bibitem[Anjewierden, 1992]{PCE:Lisp}
4A.~Anjewierden.
5\newblock {\em {PCE/Lisp}: {PCE Common Lisp} Interface}.
6\newblock {SWI}, University of Amsterdam, Roetersstraat 15, 1018 WB Amsterdam,
7  The Netherlands, 1992.
8\newblock E-mail: anjo@swi.psy.uva.nl.
9
10\bibitem[Wielemaker \& Anjewierden, 1992]{PCE:Prolog}
11J.~Wielemaker and A.~Anjewierden.
12\newblock {\em Programming in {PCE/Prolog}}.
13\newblock {SWI}, University of Amsterdam, Roetersstraat 15, 1018 WB Amsterdam,
14  The Netherlands, 1992.
15\newblock E-mail: jan@swi.psy.uva.nl.
16
17\end{thebibliography}
18