About this article
Published Online: Oct 08, 2019
Page range: 155 - 161
Received: May 03, 2019
Accepted: May 25, 2019
DOI: https://doi.org/10.2478/cqpi-2019-0021
Keywords
© 2019 Aleksandra Wrzalik, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Wrzalik, Aleksandra
Czestochowa University of TechnologyPoland