1. Bayerisches Geoinstitut
2. Universität Bayreuth
3. Bayreuth D-95447
4. Germany
5. Institute for Solid State Chemistry of Ural Branch of Russian Academy of Sciences
6. M. N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
7. Yekaterinburg 620137
8. Russia
9. Uzhgorod National University
10. 88000 Uzhgorod
11. Ukraine