1. Faculty of Physics; University of Belgrade; Studentski trg 12-16 11001 Belgrade Serbia
2. The College of Textile Design, Technology and Management; Starine Novaka 24 Belgrade Serbia
3. Department of Chemistry; University of the Free State (Qwaqwa Campus); Private Bag X13 9866 Phuthaditjhaba South Africa
4. Vinca Institute of Nuclear Sciences; University of Belgrade; P.O. Box 522 11001 Belgrade Serbia
5. Institute of Chemistry, Technology and Metallurgy; University of Belgrade; Njegoseva 12 11000 Belgrade Serbia