About this article
Published Online: Nov 18, 2020
Page range: 54 - 72
Received: May 15, 2020
Accepted: Jul 11, 2020
DOI: https://doi.org/10.2478/ctra-2020-0004
Keywords
© 2020 Krzysztof J. Szmidt et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Szmidt, Krzysztof J.
University of LodzPoland
Majewska-Owczarek, Anna
University of LodzPoland