Eicker, N. [P:(DE-Juel1)132090] ; Frommer, A. [P:(DE-HGF)0] ; Hoeber, H. [P:(DE-HGF)0] ; Lippert, Th. [P:(DE-Juel1)132179] ; Medecke, B. [P:(DE-HGF)0] ; Ritzenhöfer, G. [P:(DE-HGF)0] ; Schilling, K. [P:(DE-HGF)0]