Jost, G. [P:(DE-Juel1)VDB94748] ; Bunte, E. [P:(DE-Juel1)156447] ; Worbs, J. [P:(DE-Juel1)VDB71529] ; Siekmann, H. [P:(DE-Juel1)VDB5937] ; Hüpkes, J. [P:(DE-Juel1)130252]