Schulze, Robert [P:(DE-HGF)0] ; Arras, Matthias M. L. [P:(DE-HGF)0] ; Helbing, Christian [P:(DE-HGF)0] ; Hölzer, Stefan [P:(DE-HGF)0] ; Schubert, Ulrich S. [P:(DE-HGF)0] ; Jandt, Klaus D. [P:(DE-H253)PIP1020133] ; Keller, Thomas F. [P:(DE-HGF)0]