Vanderborght, J. [P:(DE-Juel1)129548] ; Gahwiller, P. [P:(DE-HGF)0] ; Wydler, H. [P:(DE-HGF)0] ; Schultze, U. [P:(DE-HGF)0] ; Flühler, M. O. [P:(DE-HGF)0]