Engel, A. [P:(DE-HGF)0] ; Brunner, D. [P:(DE-HGF)0] ; Boenisch, H. [P:(DE-HGF)0] ; Fischer, H. [P:(DE-HGF)0] ; Hegglin, M. [P:(DE-HGF)0] ; Hoor, P. [P:(DE-HGF)0] ; Maser, R. [P:(DE-HGF)0] ; Peter, Th. [P:(DE-HGF)0] ; Schiller, C. [P:(DE-Juel1)VDB1410] ; Schmidt, U. [P:(DE-Juel1)VDB1434] ; Szabo, T. [P:(DE-HGF)0] ; Wernli, H. [P:(DE-HGF)0] ; Wirth, V. [P:(DE-HGF)0]