Leu, L. [P:(DE-HGF)0] ; Georgiadis, A. [P:(DE-HGF)0] ; Blunt, M. J. [P:(DE-HGF)0] ; Busch, A. [P:(DE-HGF)0] ; Bertier, P. [P:(DE-HGF)0] ; Schweinar, K. [P:(DE-HGF)0] ; Liebi, M. [P:(DE-HGF)0] ; Menzel, A. [P:(DE-HGF)0] ; Ott, H. [P:(DE-HGF)0]