Institution: | (1) Department of Mathematics, University of Rijeka, Omladinska 14, 51000 Rijeka, Croatia;(2) Faculty of Textile Technology, University of Zagreb, Pierottijeva, 6, 10000 Zagreb, Croatia;(3) Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia;(4) Department of Mathematics, University of Zagreb, Bijenika 30, 10000 Zagreb, Croatia |