Mennes, N. [P:(DE-HGF)0] ; Klare, J. P. [P:(DE-HGF)0] ; Chizhov, I. [P:(DE-HGF)0] ; Seidel, R. [P:(DE-HGF)0] ; Schlesinger, R. [P:(DE-Juel1)VDB1421] ; Engelhard, M. [P:(DE-HGF)0]