\addcontentsline{toc}{section}{\numberline{}Bibliography}
\begin{thebibliography}{99}

\bibitem{freericks}
M.~Freericks.
\emph{The nML Machine Description Formalism}.
Technical Report TR SM-IMP/DIST/08, TU Berlin CS Department, 1993.

\bibitem{ruby-site}
\emph{Ruby site} -- \url{http://www.ruby-lang.org}

\bibitem{ruby-matz}
<NAME>., <NAME>.
\emph{The Ruby Programming Language}.
O’Reilly Media, Sebastopol, 2008.

\bibitem{jruby-site}
\emph{JRuby site} -- \url{http://jruby.org}

\end{thebibliography}
