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\par{\centering
{\LARGE\textsc{References}}
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\begin{tabular}{r|p{11cm}}
\multicolumn{2}{l}{\large\scshape\raggedright Postdoctoral supervisor}\\
\multicolumn{2}{c}{\hrulefill}\\
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\textsc{PD Dr. Gabriel Bester} &
\begin{minipage}[t]{0.3\textwidth}
 Theory of Semiconductor\newline
 Nanostructures\newline
 MPI for Solid State Reseacrh\newline
 Germany
\end{minipage}
\begin{minipage}[t]{0.4\textwidth}
\textsc{email:}
\href{mailto:g.bester@fkf.mpg.de}{g.bester@fkf.mpg.de}\newline
\textsc{phone:} +49-711-689-1758\newline
\end{minipage}\\
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\multicolumn{2}{l}{\large\scshape\raggedright Official doctoral supervisors}\\
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\textsc{Prof. Bernd Stritzker}&
\begin{minipage}[t]{0.3\textwidth}
 Institute of Physics\newline
 University of Augsburg\newline
 Germany
\end{minipage}
\begin{minipage}[t]{0.4\textwidth}
\textsc{email:}
\href{mailto:stritzker@physik.uni-augsburg.de}{stritzker@physik.uni-augsburg.de}\newline
\textsc{phone:} +49-821-5983400\newline
\end{minipage}\\
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\textsc{Prof. Kai Nordlund} &
\begin{minipage}[t]{0.3\textwidth}
 Department of Physics\newline
 University of Helsinki\newline
 Finland
\end{minipage}
\begin{minipage}[t]{0.4\textwidth}
\textsc{email:}
\href{mailto:kai.nordlund@helsinki.fi}{kai.nordlund@helsinki.fi}\newline
\textsc{phone:} +358-9-19150007
\end{minipage}\\
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\multicolumn{2}{l}{\large\scshape\raggedright Doctoral advisor / mentor}\\
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%\section{Advisor}
%\begin{tabular}{r|p{11cm}}
\textsc{Prof. J\"org K. N. Lindner} &
\begin{minipage}[t]{0.3\textwidth}
 Department Physik\newline
 University of Paderborn\newline
 Germany
\end{minipage}
\begin{minipage}[t]{0.4\textwidth}
\textsc{email:}
\href{mailto:lindner@physik.upb.de}{lindner@physik.upb.de}\newline
\textsc{phone:} +49-5251-602748\newline
\end{minipage}\\
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\multicolumn{2}{l}{\large\scshape\raggedright Collaborating scientists}\\
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%\section{Collaboration}
%\begin{tabular}{r|p{11cm}}
\textsc{Prof. W. Gero Schmidt} &
\begin{minipage}[t]{0.3\textwidth}
 Theoretical Physics\newline
 Universit\"at Paderborn\newline
 Germany
\end{minipage}
\begin{minipage}[t]{0.4\textwidth}
\textsc{email:}
\href{mailto:w.g.schmidt@upb.de}{w.g.schmidt@upb.de}\newline
\textsc{phone:} +49-5251-602335\newline
\end{minipage}\\
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\textsc{Dr. Eva Rauls} &
\begin{minipage}[t]{0.3\textwidth}
 Theoretical Physics\newline
 University of Paderborn\newline
 Germany
\end{minipage}
\begin{minipage}[t]{0.4\textwidth}
\textsc{email:}
\href{mailto:rauls@phys.upb.de}{rauls@phys.upb.de}\newline
\textsc{phone:} +49-5251-603824\newline
\end{minipage}\\
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\multicolumn{2}{l}{\large\scshape\raggedright Second referee of the doctoral thesis}\\
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\textsc{Dr. Volker Eyert} &
\begin{minipage}[t]{0.3\textwidth}
 Materials Design\newline
 USA / Europe
\end{minipage}
\begin{minipage}[t]{0.4\textwidth}
\textsc{email:}
\href{mailto:veyert@materialsdesign.com}{veyert@materialsdesign.com}\newline
\end{minipage}\\
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\end{tabular}

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