About this article
Published Online: Apr 09, 2020
Page range: 117 - 134
Received: May 08, 2019
Accepted: Jun 30, 2019
DOI: https://doi.org/10.2478/auom-2020-0009
Keywords
© 2020 Alexandru Ionescu et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Ionescu, Alexandru
Department of Mathematics and Informatics, Transilvania University of BraşovBraşov, Romania
Munteanu, Gheorghe
Department of Mathematics and Informatics, Transilvania University of BraşovBraşov, Romania