1. CNRS
2. CEMHTI UPR3079
3. Univ. Orléans
4. F-45071 Orléans
5. France
6. Department of Materials Engineering and Chemistry
7. Faculty of Civil Engineering
8. Czech Technical University in Prague
9. 166 29 Prague 6
10. Czech Republic
11. Institute of Inorganic Chemistry
12. Slovak Academy of Sciences
13. 845 36 Bratislava
14. Slovakia