Düssel, T. [P:(DE-Juel1)VDB48500] ; Zilken, H. [P:(DE-Juel1)132305] ; Frings, W. [P:(DE-Juel1)132108] ; Eickermann, T. [P:(DE-Juel1)132091] ; Gerndt, A. [P:(DE-HGF)0] ; Wolter, M. [P:(DE-HGF)0] ; Kuhlen, T. [P:(DE-HGF)0]