Authors
Kamila Bednarz-Okrzyńska
Ph.D. University of Szczecin Faculty of Management and Economics of Services Department of Quantitative Methods Cukrowa 8, 71-004, Szczecin, Poland
© 2018 Kamila Bednarz-Okrzyńska, published by University of Szczecin
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.