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