Authors
t.studzieniecki@wznj.umg.edu.pl
Department of Marketing and Quantitative Methods, Gdynia Maritime University, Gdynia, Poland
t.studzieniecki@wznj.umg.edu.pl
© 2026 Tomasz Studzieniecki, published by Faculty of Geography and Regional Studies, University of Warsaw
This work is licensed under the Creative Commons Attribution 4.0 License.