Herbst, Michael [P:(DE-Juel1)129469] ; Bornemann, L. [P:(DE-HGF)0] ; Graf, Alexander [P:(DE-Juel1)129461] ; Welp, G. [P:(DE-HGF)0] ; Vereecken, Harry [P:(DE-Juel1)129549] ; Amelung, Wulf [P:(DE-Juel1)129427]