Röpke, G. [P:(DE-HGF)0] ; Bastian, N.-U. [P:(DE-HGF)0] ; Blaschke, D. [P:(DE-HGF)0] ; Klähn, T. [P:(DE-HGF)0] ; Typel, S. [P:(DE-Ds200)OR1311] ; Wolter, H.H. [P:(DE-HGF)0]