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Publicado en línea: 26 ago 2021
Páginas: 164 - 181
Recibido: 29 jul 2020
DOI: https://doi.org/10.2478/ausm-2021-0009
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© 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