Wilkens, H. [P:(DE-H253)PIP1010906] ; Spieß, W. [P:(DE-H253)PIP1017885] ; Zoellner, M. H. [P:(DE-HGF)0] ; Niu, G. [P:(DE-HGF)0] ; Schroeder, T. [P:(DE-HGF)0] ; Wollschlaeger, Joachim [P:(DE-H253)PIP1007860]