Urbain, F. [P:(DE-Juel1)156469] ; Wilken, K. [P:(DE-Juel1)156395] ; Smirnov, V. [P:(DE-Juel1)130297] ; Astakhov, O. [P:(DE-Juel1)130212] ; Lambertz, A. [P:(DE-Juel1)130263] ; Becker, J.-P. [P:(DE-HGF)0] ; Rau, U. [P:(DE-Juel1)143905] ; Ziegler, J. [P:(DE-HGF)0] ; Kaiser, B. [P:(DE-HGF)0] ; Jaegermann, W. [P:(DE-HGF)0] ; Finger, F. [P:(DE-Juel1)130238]