Havel, V. [P:(DE-HGF)0] ; Fleck, K. [P:(DE-HGF)0] ; Rosgen, B. [P:(DE-Juel1)144776] ; Rana, V. [P:(DE-Juel1)145504] ; Menzel, S. [P:(DE-Juel1)158062] ; Bottger, U. [P:(DE-HGF)0] ; Waser, R. [P:(DE-Juel1)131022]