1. Department of Inorganic Chemistry
2. Faculty of Sciences
3. P. J. Šafárik University in Košice
4. 041 54 Košice
5. Slovakia
6. Departamento de Química Inorgánica
7. Instituto de Ciencia de Materiales de Aragón (ICMA)
8. University of Zaragoza-CSIC
9. E-50009 Zaragoza
10. Spain
11. Institute of Inorganic Chemistry
12. Slovak University of Technology
13. 812 37 Bratislava
14. Department of Chemistry
15. Faculty of Natural Sciences
16. University of SS Cyril and Methodius, nám. J. Herdu 2
17. 917 01 Trnava