Gietl, H. [P:(DE-HGF)0] ; Riesch, J. [P:(DE-HGF)0] ; Coenen, J. W. [P:(DE-Juel1)2594] ; Höschen, T. [P:(DE-HGF)0] ; Linsmeier, Ch. [P:(DE-Juel1)157640] ; Neu, R. [P:(DE-HGF)0]