Li, Wenfeng [P:(DE-82)IDM02885] ; Roggenkamp, Dorothee [P:(DE-82)1141822385] ; Hecken, Tobias [P:(DE-82)728312] ; Jessen, Wilhelm [P:(DE-82)005003] ; Klaas, Michael [P:(DE-82)IDM00619] ; Schröder, Wolfgang [P:(DE-82)IDM00681]