Quadakkers, Willem J. [P:(DE-Juel1)129782] ; Huczkowski, Pawel [P:(DE-Juel1)129727] ; Gerhardt, A. [P:(DE-HGF)0] ; Burchhardt, U. [P:(DE-HGF)0] ; Chyrkin, Anton [P:(DE-Juel1)129701] ; Hüttel, Th. [P:(DE-HGF)0]