1. University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
2. University of Kragujevac, Institute for Information Technologies Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
3. Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11000 Belgrade, Serbia