Büchler, O. [P:(DE-Juel1)VDB50856] ; Meulenberg, W. A. [P:(DE-Juel1)129637] ; Buchkremer, H. P. [P:(DE-Juel1)129594] ; Kriegesmann, J. [P:(DE-Juel1)VDB57342] ; Stöver, D. [P:(DE-Juel1)129666]