Urbain, Felix [P:(DE-Juel1)156469] ; Smirnov, Vladimir [P:(DE-Juel1)130297] ; Becker, Jan Philipp [P:(DE-Juel1)142337] ; Rau, Uwe [P:(DE-Juel1)143905] ; Ziegler, Jürgen [P:(DE-HGF)0] ; Kaiser, Bernhard [P:(DE-HGF)0] ; Jaegermann, Wolfram [P:(DE-HGF)0] ; Finger, Friedhelm [P:(DE-Juel1)130238]