1. Organic Chemistry I - Bioorganic Chemistry, Institute of Chemistry of New MaterialsUniversity of Osnabrück, Barbarastr. 7 D-49069 Osnabrück Germany
2. Anorganische Chemie II, Strukturchemie, Institute of Chemistry of New MaterialsUniversity of Osnabrück Barbarastr. 7, D-49069 Osnabrück Germany
3. Institute for Anatomy and Cell Biology, Department of Medical Cell BiologyPhilipps-University of Marburg Robert-Koch-Str. 8 D-35032 Marburg Germany