Authors
grzegorz.maciejewski@ue.katowice.pl
Department of Market and Consumption, Faculty of Economics, University of Economics in Katowice
Department of Management, Faculty of Applied Sciences, WSB University
grzegorz.maciejewski@ue.katowice.pl
© 2022 Grzegorz Maciejewski, Piotr Krowicki, published by ŁUKASIEWICZ RESEARCH NETWORK – INSTITUTE OF AVIATION
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.