Spirig, C. [P:(DE-HGF)0] ; Neftel, A. [P:(DE-HGF)0] ; Ammann, D. [P:(DE-HGF)0] ; Dommen, G. Di. [P:(DE-HGF)0] ; Wildt, J. [P:(DE-Juel1)VDB1780] ; Schaub, A. [P:(DE-Juel1)VDB10108]