Laatiaoui, M. [P:(DE-HGF)0] ; Backe, H. [P:(DE-HGF)0] ; Habs, D. [P:(DE-HGF)0] ; Kunz, P. [P:(DE-HGF)0] ; Lauth, W. [P:(DE-HGF)0] ; Sewtz, M. [P:(DE-HGF)0]