Zhang, Qinyin [P:(DE-82)021870] ; Bui, Phong [P:(DE-82)073974] ; El-Askary, Wageeh Ahmed Abd-El-Fattah [P:(DE-82)187923] ; Meinke, Matthias [P:(DE-82)IDM00270] ; Schröder, Wolfgang [P:(DE-82)IDM00681]