Bierbaum, B. [P:(DE-HGF)0] ; Clauss, C. [P:(DE-HGF)0] ; Eickermann, T. [P:(DE-Juel1)132091] ; Kirtchakova, L. [P:(DE-Juel1)VDB45417] ; Krechel, A. [P:(DE-HGF)0] ; Springstubbe, S. [P:(DE-HGF)0] ; Wäldrich, O. [P:(DE-HGF)0] ; Ziegler, W. [P:(DE-HGF)0]