Westhoff, M. [P:(DE-HGF)0] ; Zimmermann, D. [P:(DE-HGF)0] ; Schneider, H. [P:(DE-Juel1)129397] ; Wegner, L.H. [P:(DE-HGF)0] ; Geßner, P. [P:(DE-HGF)0] ; Jakob, P. [P:(DE-HGF)0] ; Bamberg, E. [P:(DE-HGF)0] ; Shirley, St. [P:(DE-HGF)0] ; Bentrup, F.-W. [P:(DE-HGF)0] ; Zimmermann, U. [P:(DE-HGF)0]