Emonts, B. [P:(DE-Juel1)129845] ; Brocke, W. A. [P:(DE-Juel1)VDB2089] ; Groehn, H.-G. [P:(DE-Juel1)VDB2090] ; Heuts, G. [P:(DE-Juel1)VDB2093] ; Janssen, H. [P:(DE-Juel1)VDB3770] ; Mai, H. [P:(DE-Juel1)VDB2094] ; Stolten, D. [P:(DE-Juel1)129928]