About this article
Published Online: Mar 30, 2021
Page range: 375 - 384
Received: Jul 05, 2020
Accepted: Mar 11, 2021
DOI: https://doi.org/10.2478/mjpaa-2021-0025
Keywords
© 2021 Khedidja Bey et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Bey, Khedidja
Laboratoire de Mathmatiques Pures et Appliques, University of Laghouat 03000Laghouat, Algeria
Belacel, Amar
Laboratoire de Mathmatiques Pures et Appliques, University of Laghouat 03000Laghouat, Algeria