Wilke, N. [P:(DE-Juel1)172705] ; Siegmann, B. [P:(DE-Juel1)172711] ; Frimpong, F. [P:(DE-Juel1)173985] ; Muller, O. [P:(DE-Juel1)161185] ; Klingbeil, L. [P:(DE-HGF)0] ; Rascher, U. [P:(DE-Juel1)129388]