\def\cprime{$'$}
\begin{thebibliography}{2}
\expandafter\ifx\csname natexlab\endcsname\relax\def\natexlab#1{#1}\fi
\expandafter\ifx\csname selectlanguage\endcsname\relax
  \def\selectlanguage#1{\relax}\fi

\bibitem[\protect\citename{Menshikov, }1985]{MenshEst}
Menshikov, M.~V. 1985.
\newblock Estimates for percolation thresholds for lattices in {${\bf R}\sp
  n$}.
\newblock {\em Dokl. Akad. Nauk SSSR}, {\bf 284}, 36--39.

\bibitem[\protect\citename{Vyssotsky {et~al.}, }1961]{VGFH}
Vyssotsky, V.~A., Gordon, S.~B., Frisch, H.~L., and Hammersley, J.~M. 1961.
\newblock Critical percolation probabilities (bond problem).
\newblock {\em Phys. Rev.}, {\bf 123}, 1566--1567.

\end{thebibliography}