Papcunová, Viera, Constantine the Philosopher University in Nitra, Faculty of Natural Sciences and Informatics, Institute of Economics and Management, Tr. A. Hlinku 1, 949 01 Nitra, Slovak Republic; Masaryk University, Faculty of Economics and Administration, Department of Regional Economics, Lipová 41a, 602 00 Brno-Pisárky, Czech Republic, Slovakia