1. Department of Chemistry Faculty of Natural and Mathematical Sciences University of Prishtina ‘Hasan Prishtina' St. “Nëna Tereze” nr. 5 10 000 Prishtina Kosovo
2. Academy of Science of Albania Unit of Albanian Nanoscience and Nanotechnology – NanoAlb 1000 Tirana Albania
3. Institute of Analytical Chemistry Faculty of Chemical and Food Technology Slovak University of Technology in Bratislava Radlinského 9 Bratislava SK-812 37 Slovak Republic