1. Faculty of Agribusiness, University of Peja “Haxhi Zeka”, Pejë, Republic of Kosovo
2. Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Prishtina, Prishtina, Republic of Kosovo
3. Chemistry Department, State Phytosanitary Laboratory, Skopje, North Macedonia
4. Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss Cyril and Methodius University, Skopje, North Macedonia
5. Geological Survey of Slovenia, Ljubljana, Slovenia