Plonka, R. [P:(DE-HGF)0] ; Dittmann, R. [P:(DE-Juel1)VDB5464] ; Pertsev, N. A. [P:(DE-HGF)0] ; Vasco, E. [P:(DE-HGF)0] ; Waser, R. [P:(DE-Juel1)131022]