Barz, C. [P:(DE-HGF)0] ; Pilz, M. [P:(DE-HGF)0] ; Eickermann, T. [P:(DE-Juel1)132091] ; Kirtchakova, L. [P:(DE-Juel1)VDB45417] ; Wäldrich, O. [P:(DE-HGF)0] ; Ziegler, W. [P:(DE-HGF)0]