Wilms-Grabe, W. [P:(DE-HGF)0] ; Corsmeier, U. [P:(DE-Juel1)VDB246] ; Junkermann, W. [P:(DE-HGF)0] ; Kottmeier, Ch. [P:(DE-HGF)0] ; Holland, F. [P:(DE-Juel1)16342] ; Geiss, H. [P:(DE-Juel1)16201] ; Neininger, B. [P:(DE-HGF)0]