Affiliation: | 1.Department of Mathematical Analysis and Applications of Mathematics, Faculty of Science, Palacky University Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic ;2.Department of Economics, Faculty of Economics and Business, University of Girona, c. Universitat de Girona 10, 17003, Girona, Spain ;3.Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68, Husinec-?e?, Czech Republic ;4.Department of Geology, Faculty of Science, Palacky University Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic ;5.Institute of Statistics and Mathematical Methods in Economics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, 1040, Vienna, Austria ;6.Biomathematics and Statistics Scotland, JCMB, The King’s Buildings, Peter Guthrie Tait Road, Edinburgh, Scotland, EH9 3FD, UK ; |