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Publicado en línea: 04 mar 2019
Páginas: 340 - 346
Recibido: 02 may 2018
DOI: https://doi.org/10.2478/ausm-2018-0026
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© 2018 Abdullah et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Abdullah,
Department of Mathematics, ZHDC, University of DelhiIndia
Shah, Firdous A.
Department of Mathematics, University of KashmirIndia