1. Ing. Michaela Jánská, PhD., Faculty of Social and Economic Studies, J.E. Purkyně University in Ústí nad Labem, Moskevská 54, 400 96 Ústí nad Labem, Czech Republic
2. Ing. Petra Olšová, Ph.D., Faculty of Social and Economic Studies, J.E. Purkyně University in Ústí nad Labem Moskevská 54, 400 96 Ústí nad Labem, Czech Republic