Glässner, U. [P:(DE-HGF)0] ; Güsken, S. [P:(DE-HGF)0] ; Hoeber, H. [P:(DE-HGF)0] ; Lippert, Th. [P:(DE-Juel1)132179] ; Ritzenhöfer, G. [P:(DE-HGF)0] ; Schilling, K. [P:(DE-HGF)0] ; Siegert, G. [P:(DE-HGF)0] ; Spitz, A. [P:(DE-HGF)0]