Authors
Katarzyna Byrka-Kita
University of Szczecin, Faculty of Economics and Management
Michał Grudziński
University of Szczecin, Faculty of Economics and Management
© 2018 Katarzyna Byrka-Kita, Michał Grudziński, published by University of Information Technology and Management in Rzeszow
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.