About this article
Published Online: Aug 26, 2021
Page range: 164 - 181
Received: Jul 29, 2020
DOI: https://doi.org/10.2478/ausm-2021-0009
Keywords
© 2021 Peyman Ghiasvand et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Ghiasvand, Peyman
Department of Mathematics, Payame Noor University
Farzalipour, Farkhonde
Department of Mathematics, Payame Noor University