Herrmann, F. [P:(DE-Juel1)141774] ; Berthold, G. [P:(DE-Juel1)VDB63508] ; Fritsche, J.G. [P:(DE-HGF)0] ; Kunkel, R. [P:(DE-Juel1)VDB4996] ; Voigt, H.J. [P:(DE-HGF)0] ; Wendland, F. [P:(DE-Juel1)VDB4997]