Karg, H. [P:(DE-Juel1)VDB40363] ; Büker, C. [P:(DE-Juel1)VDB41696] ; Littke, R. [P:(DE-Juel1)VDB951] ; Nöth, S. [P:(DE-Juel1)VDB66936] ; Welte, D. H. [P:(DE-Juel1)VDB40342]