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Goran Jakšić
City of Karlovac, Banjavčićeva 9, 47000 Karlovac, Croatia
Margita Jadan
Division of materials chemistry, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
Marina Piria
University of Zagreb, Faculty of Agriculture, Department of Fisheries, Beekeeping, Game management and Special Zoology, Svetošimunska 25, 10000 Zagreb, Croatia