\documentclass{beamer}
\begin{document}
\begin{frame}
  a frame without bibliography, works
\end{frame}
\begin{frame}
  bibliography, doesn't work
  \beamertemplatebookbibitems
  \begin{thebibliography}{10}
  \bibitem{foo} foo
%   \beamertemplatearticlebibitems
%   \bibitem{bar} bar
  \end{thebibliography}
\end{frame}
\end{document}