Authors
Marek Obrębalski
Department of Regional Economy, Faculty of Economics, Management and Tourism, Wrocław University of Economics, Wrocław, Poland
© 2017 Marek Obrębalski, published by Jan Evangelista Purkyně University in Ústí nad Labem
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.