About this article
Published Online: Jan 01, 2022
Page range: 85 - 118
Received: Dec 22, 2020
DOI: https://doi.org/10.2478/tmmp-2021-0007
Keywords
© 2021 Mathematical Institute, Slovak Academy of Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Száz, Árpád
Department of Mathematics, Faculty of Natural Sciences, University of DebrecenDebrecen, HUNGARY