Meyer, M. [P:(DE-Juel1)VDB2821] ; Hübner, E. [P:(DE-HGF)0] ; Pyckhout-Hintzen, W. [P:(DE-Juel1)VDB4207] ; Allgaier, J. [P:(DE-Juel1)130501] ; Radulescu, A. [P:(DE-Juel1)VDB4342] ; Richter, D. [P:(DE-Juel1)130917]