Finger, Friedhelm [P:(DE-Juel1)130238] ; Welter, Katharina [P:(DE-Juel1)167359] ; Urbain, Félix [P:(DE-Juel1)156469] ; Smirnov, Vladimir [P:(DE-Juel1)130297] ; Kaiser, Bernhard [P:(DE-HGF)0] ; Jaegermann, Wolfram [P:(DE-HGF)0]