Engels, R. [P:(DE-Juel1)133882] ; Clemens, U. [P:(DE-Juel1)133875] ; Rongen, H. [P:(DE-Juel1)133931] ; Kemmerling, G. [P:(DE-Juel1)VDB2183] ; Schelten, J. [P:(DE-Juel1)VDB2184]