Jasper, B. [P:(DE-Juel1)158038] ; Coenen, J. W. [P:(DE-Juel1)2594] ; Riesch, J. [P:(DE-HGF)0] ; Höschen, T. [P:(DE-HGF)0] ; Bram, M. [P:(DE-Juel1)129591] ; Linsmeier, Ch. [P:(DE-Juel1)157640]