About this article
Published Online: Jul 17, 2021
Page range: 150 - 165
DOI: https://doi.org/10.2478/jtes-2021-0011
Keywords
© 2021 Ilga Salīte et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Salīte, Ilga
Daugavpils UniversiyDaugavpils, Latvia
Fjodorova, Ilona
Daugavpils UniversiyDaugavpils, Latvia
Butlere, Inese
Daugavpils UniversiyDaugavpils, Latvia
Ivanova, Oksana
Riga Technical UniversityRiga, Latvia