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. University of Kragujevac, Faculty of Agronomy in Čačak, Ljubićska 30, Čačak, Serbia