Authors
Otakar Ungerman
Technical University of Liberec, Faculty of Economics, Department of Marketing and Trade Liberec
Jaroslava Dědková
Technical University of Liberec, Faculty of Economics, Department of Marketing and Trade Liberec
© 2021 Otakar Ungerman, Jaroslava Dědková, published by Mendel University in Brno
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.