Passon, O. [P:(DE-Juel1)VDB49737] ; Birmanns, S. [P:(DE-HGF)0] ; Boltes, M. [P:(DE-Juel1)132064] ; Zilken, H. [P:(DE-Juel1)132305] ; Wrigger, W. [P:(DE-HGF)0]