Authors
Agata Gemzik-Salwach
University of Information Technology and Management, Rzeszów, Poland
Paweł Perz
Rzeszow University of Technology, Rzeszów, Poland
© 2019 Agata Gemzik-Salwach, Paweł Perz, published by Faculty of Economic Sciences, University of Warsaw
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.