Welter, Katharina [P:(DE-Juel1)167359] ; Becker, Jan-Philipp [P:(DE-Juel1)142337] ; Finger, Friedhelm [P:(DE-Juel1)130238] ; Jaegermann, Wolfram [P:(DE-HGF)0] ; Smirnov, Vladimir [P:(DE-Juel1)130297]