Steinberger-Wilckens, R. [P:(DE-Juel1)VDB9342] ; Blum, L. [P:(DE-Juel1)129828] ; Buchkremer, H. P. [P:(DE-Juel1)129594] ; Gross, S. [P:(DE-Juel1)VDB45598] ; Haart, L.G.J. de [P:(DE-Juel1)129952] ; Hilpert, K. [P:(DE-Juel1)VDB2710] ; Nabielek, H. [P:(DE-Juel1)VDB3939] ; Quadakkers, W. [P:(DE-Juel1)VDB28656] ; Reisgen, U. [P:(DE-Juel1)VDB3383] ; Steinbrech, R. W. [P:(DE-Juel1)VDB1573] ; Tietz, F. [P:(DE-Juel1)129667]