Pikhovych, A. [P:(DE-HGF)0] ; Walter, H. L. [P:(DE-HGF)0] ; Mahabir, E. [P:(DE-HGF)0] ; Fink, G. R. [P:(DE-Juel1)131720] ; Graf, R. [P:(DE-HGF)0] ; Schroeter, M. [P:(DE-HGF)0] ; Rueger, M. A. [P:(DE-HGF)0]