About this article
Published Online: Dec 24, 2022
Page range: 56 - 66
DOI: https://doi.org/10.2478/awutm-2022-0017
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© 2022 Rovana Boruga Toma, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Toma, Rovana Boruga
Department of Mathematics, West University of TimişoaraTimişoara, Romania