\begin{thebibliography}{1}
\newcommand{\enquote}[1]{``#1''}
\expandafter\ifx\csname url\endcsname\relax
  \def\url#1{\texttt{#1}}\fi
\expandafter\ifx\csname urlprefix\endcsname\relax\def\urlprefix{URL }\fi

\bibitem{Ho-Le88}
Ho-Le K.
\newblock \enquote{Finite Element Mesh Generation Methods: A Review and
  Classification.}
\newblock \emph{Computer Aided Design}, vol. 1 (20), 27--38, 1988

\bibitem{Mantila88}
M\"antil\"a M.
\newblock \emph{An Introduction to Solid Modeling}.
\newblock Computer Science Press, Maryland, 1988

\bibitem{watson}
Watson D.F.
\newblock \enquote{Computing the Delaunay Tesselation with Application to
  Voronoi Polytopes.}
\newblock \emph{The Computer Journal}, vol.~24, 167--172, 1981

\end{thebibliography}