1. Biomaterials Research Laboratory
2. Institute of Inorganic Chemistry
3. Riga Technical University
4. Riga
5. Latvia
6. Institute of Physics
7. University of Tartu
8. 50411 Tartu
9. Estonia
10. Department of Inorganic and Analytical Chemistry
11. University of Geneva
12. 1205 Geneva
13. Switzerland
14. Research Laboratory of Functional Materials Technologies