Butzek, D. P. [P:(DE-Juel1)VDB4096] ; Achten, R. [P:(DE-Juel1)VDB39776] ; Giesen, U. [P:(DE-Juel1)VDB38976] ; Kozielewski, T. [P:(DE-Juel1)VDB4287] ; Laatsch, B. [P:(DE-Juel1)VDB29117] ; Monkenbusch, M. [P:(DE-Juel1)VDB2684] ; Ohl, M. [P:(DE-Juel1)VDB1186] ; Pabst, U. [P:(DE-Juel1)VDB51379] ; Soltner, H. [P:(DE-Juel1)VDB4093] ; Tiemann, Ch. [P:(DE-Juel1)VDB51381]