Sintermann, J. [P:(DE-HGF)0] ; Spirig, C. [P:(DE-HGF)0] ; Jordan, A. [P:(DE-HGF)0] ; Kuhn, U. [P:(DE-Juel1)8844] ; Ammann, C. [P:(DE-HGF)0] ; Neftel, A. [P:(DE-HGF)0]