Eickermann, T. [P:(DE-Juel1)132091] ; Westphal, L. [P:(DE-Juel1)VDB71035] ; Wäldrich, O. [P:(DE-HGF)0] ; Ziegler, W. [P:(DE-HGF)0] ; Barz, C. [P:(DE-HGF)0] ; Pilz, M. [P:(DE-HGF)0]