\begin{thebibliography}{3}
\expandafter\ifx\csname natexlab\endcsname\relax\def\natexlab#1{#1}\fi
\expandafter\ifx\csname url\endcsname\relax
  \def\url#1{{\tt #1}}\fi

\bibitem[Dyer(2000)]{dyer-loa-web}
Dave Dyer.
\newblock {\em {L}ines {O}f {A}ction} {H}ome {P}age.
\newblock Web document, 2000.
\newblock URL \url{http://www.andromeda.com/people/ddyer/loa/loa.html}.

\bibitem[Fifth Computer Olympiad(2000)]{olympiad-2000}
Fifth Computer Olympiad.
\newblock Web document, 2000.
\newblock URL \url{http://www.dcs.qmw.ac.uk/~olympiad/}.

\bibitem[{\em Lines Of Action} Rules(2000)]{olympiad-loa-rules}
{\em Lines Of Action} Rules.
\newblock Web document, 2000.
\newblock URL \url{http://www.dcs.qmw.ac.uk/~olympiad/LOA.htm}.
\newblock See~\cite{olympiad-2000}.

\end{thebibliography}
