Katranidis, A. [P:(DE-Juel1)131971] ; Atta, D. [P:(DE-Juel1)VDB86033] ; Schlesinger, R. [P:(DE-Juel1)VDB1421] ; Nierhaus, K.H. [P:(DE-HGF)0] ; Choli-Papadopoulous, T. [P:(DE-HGF)0] ; Gregor, I. [P:(DE-HGF)0] ; Gerrits, M. [P:(DE-HGF)0] ; Büldt, G. [P:(DE-Juel1)131957] ; Fitter, J. [P:(DE-Juel1)131961]