References (in bibtex) did not appear in beamer?

Question

I have this problem: it seems that beamer did not read the bibtex file. Below is the syntax that I am using:

\documentclass{beamer}

\usepackage{natbib} %citep and citet
\renewcommand{\bibsection}{\subsubsection*{\bibname}} % to avoid References creates new section/subsection in header
\bibpunct[:]{(}{)}{;}{a}{}{,}

\begin{document}

\begin{frame}[allowframebreaks]{References}
\def\newblock{\hskip .11em plus .33em minus .07em}
\bibliographystyle{alpha}
\bibliography{reff.bib} % file name of the bibtex
\end{frame}

\end{document}

Answer 1

Try to add

\nocite{*}

in your document for testing.

Then you should get a bibliography, which includes your complete bib file items. In a real beamer document you can use \cite commands or more specific forms of \nocite instead, of course.