Kanngiesser, B. [P:(DE-HGF)0] ; Brünken, S. [P:(DE-HGF)0] ; Godehusen, K. [P:(DE-HGF)0] ; Gerth, Ch. [P:(DE-HGF)0] ; Malzer, W. [P:(DE-HGF)0] ; Richter, M. [P:(DE-HGF)0] ; Zimmermann, P. [P:(DE-HGF)0]