Authors
Petr Hlaváček
Faculty of Social and Economic Studies, J. E. Purkyně University, Ústí nad Labem, Czechia
Martin Mata
Faculty of Social and Economic Studies, J. E. Purkyně University, Ústí nad Labem, Czechia
Pavel Zdražil
Faculty of Economics and Administration, University of Pardubice, Pardubice, Czechia