Authors
Ireneusz.Rutkowski@ue.poznan.pl
Department of Market Research and Services Management, Institute of Marketing, Poznań University of Economics and Business, Poznań, Poland
Ireneusz.Rutkowski@ue.poznan.pl
© 2022 Ireneusz P. Rutkowski, published by ŁUKASIEWICZ RESEARCH NETWORK – INSTITUTE OF AVIATION
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.