À propos de cet article
Publié en ligne: 18 nov. 2020
Pages: 54 - 72
Reçu: 15 mai 2020
Accepté: 11 juil. 2020
DOI: https://doi.org/10.2478/ctra-2020-0004
Mots clés
© 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