Wendland, F. [P:(DE-Juel1)VDB4997] ; Berthold, G. [P:(DE-HGF)0] ; Blum, A. [P:(DE-HGF)0] ; Elsass, P. [P:(DE-HGF)0] ; Fritsche, H. G. [P:(DE-HGF)0] ; Kunkel, R. [P:(DE-Juel1)VDB4996] ; Wolter, R. [P:(DE-HGF)0]