1. Faculty of Natural Sciences and Mathematics; Department of Physics; “Ss. Cyril and Methodius” University; Skopje 1000 Macedonia
2. Faculty of Natural Sciences and Mathematics; Department of Chemistry; “Ss. Cyril and Methodius” University; Skopje 1000 Macedonia
3. Faculty of Medical Sciences; Goce Delcev University; Stip Macedonia
4. Faculty of Chemistry and Chemical Technology; University of Ljubljana; Ljubljana 1000 Slovenia