# Negative indentation for beamer bibliography

As a part of my project, I redesigned the beamer default margins to 12 mm left margin and 8 mm right margin. But, I do not want this for bibliography, where the same left and right margins are preferred, ie 8mm left and 8 mm right.

Is there any way to do this ? Have look at the minimal working sample and the image attached with this.

Code:

\documentclass[xcolor={dvipsnames,table},11pt]{beamer}
\setbeamersize{text margin left=12 mm, text margin right=8 mm}
\begin{document}
\begin{frame}
\begin{thebibliography}{plain}
\bibitem{} My reference one
\bibitem{} My reference two![enter image description here][1]
\bibitem{} All these references have 12 mm left margin, which I do not want.
\end{thebibliography}
\end{frame}
\end{document}


• – touhami Jul 10 '15 at 8:31
• Yes, that thread is very much informative, and opened new windows of beamer customizations to me. Thank you Touhami for this ! – Ashok Jul 12 '15 at 7:40

A quick hack would be to redefine the bibliography item and add a negative hspace of your desired 4 mm to it.

The drawback: in case you have different types like books or online sources one would have to redefine all the different templates.

\documentclass[xcolor={dvipsnames,table},11pt]{beamer}
\setbeamersize{text margin left=12 mm, text margin right=8 mm}

\setbeamertemplate{bibliography item}{\hspace{-0.4cm}\lower3pt\hbox{\pgfuseimage{beamericonarticle}}}

\begin{document}
\begin{frame}
\begin{thebibliography}{plain}
\bibitem{} My reference one
\bibitem{} My reference two![enter image description here][1]
\bibitem{} All these references have 12 mm left margin, which I do not want. Longer line
\end{thebibliography}
\end{frame}
\end{document}