\begin{thebibliography}{Rud07}

% this bibliography is generated by alphadin.bst [8.2] from 2005-12-21

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  \providecommand{\doi}[1]{doi: #1}\else
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\bibitem[Rud07]{Rudin2007}
\textsc{Rudin}, Walter:
\newblock \emph{Analysis}.
\newblock Oldenbourg Wissenschaftsverlag GmbH, 2007

\end{thebibliography}