Cottre, Thorsten [P:(DE-HGF)0] ; Welter, Katharina [P:(DE-Juel1)167359] ; Ronge, Emanuel [P:(DE-HGF)0] ; Smirnov, Vladimir [P:(DE-Juel1)130297] ; Finger, Friedhelm [P:(DE-Juel1)130238] ; Jooss, Christian [P:(DE-HGF)0] ; Kaiser, Bernhard [P:(DE-HGF)0] ; Jaegermann, Wolfram [P:(DE-HGF)0]