Handschak, D. [P:(DE-HGF)0] ; Lühr, T. [P:(DE-HGF)0] ; Schönbohm, F. [P:(DE-HGF)0] ; Döring, S. [P:(DE-Juel1)144959] ; Keutner, C. [P:(DE-HGF)0] ; Berges, U. [P:(DE-HGF)0] ; Westphal, C. [P:(DE-HGF)0]