Ettler, M. [P:(DE-Juel1)VDB60357] ; Menzler, N.H. [P:(DE-Juel1)129636] ; Mauer, G. [P:(DE-Juel1)129633] ; Tietz, F. [P:(DE-Juel1)129667] ; Buchkremer, H.P. [P:(DE-Juel1)129594] ; Stöver, D. [P:(DE-Juel1)129666]