Hennecke, M. [P:(DE-HGF)0] ; Frings, W. [P:(DE-Juel1)132108] ; Homberg, W. [P:(DE-Juel1)132142] ; Zitz, A. [P:(DE-Juel1)138688] ; Knobloch, M. [P:(DE-Juel1)132163] ; Böttiger, H. [P:(DE-HGF)0]