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+\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
+