1. Department of Analytical Chemistry
2. Ivan Franko National University of L’viv
3. 79005 L’viv
4. Ukraine
5. Department of Condensed Matter Physics
6. The Ames Laboratory
7. U.S. Department of Energy
8. Iowa State University
9. Ames
10. USA
11. Charles University
12. Ke Karlovu 5
13. 121 16 Prague 2
14. Czech Republic