Stöver, D. [P:(DE-Juel1)129666] ; Buchkremer, H. P. [P:(DE-Juel1)129594] ; Meulenberg, W. A. [P:(DE-Juel1)129637] ; Singheiser, L. [P:(DE-Juel1)129795] ; Beck, T. [P:(DE-Juel1)129685]