1. Department of Inorganic Chemistry Faculty of Science Palacký University 17. listopadu 12 771 46 Olomouc Czech Republic
2. Institute of Physics Faculty of Science P.J. Šafárik University in Košice Park Angelinum 9 041 54 Košice Slovakia
3. Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 2030 128 00 Prague Czech Republic