\chapter*{Acknowledgment}
\addcontentsline{toc}{chapter}{Acknowledgment}

%First of all, I would like to thank Prof. Dr. Bernd Stritzker and Prof. Dr. Kai Nordlund for accepting me as a PhD student at their chairs at the University of Augsburg and Helsinki.
%Although Mr. Stritzker is doing experimental physics in Augsburg he gave me the opportunity to do this more or less theoretical work.
%During my stays in Finland Mr. Nordlund \ldots

Thanks to \ldots\\[2cm]

 \underline{Augsburg}
 \begin{itemize}
  \item Prof. B. Stritzker (accomodation at EP \RM{4})
  \item Ralf Utermann (EDV)
 \end{itemize}
 
 \underline{Helsinki}
 \begin{itemize}
  \item Prof. K. Nordlund (MD)
 \end{itemize}
 
 \underline{Munich}
 \begin{itemize}
  \item Bayerische Forschungsstiftung (financial support)
 \end{itemize}
 
 \underline{Paderborn}
 \begin{itemize}
  \item Prof. J. Lindner (SiC)
  \item Prof. G. Schmidt (DFT + financial support)
  \item Dr. E. Rauls (DFT + SiC)
  \item Dr. S. Sanna (VASP)
 \end{itemize}

