About this article
Published Online: Dec 02, 2020
Page range: 260 - 271
Received: Aug 21, 2019
DOI: https://doi.org/10.2478/ausm-2020-0017
Keywords
© 2020 Dorota Bród, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Bród, Dorota
Rzeszow University of Technology, Faculty of Mathematics and Applied PhysicsRzeszów, Poland