About this article
Published Online: Jan 24, 2020
Page range: 140 - 163
Received: Jul 25, 2019
Accepted: Oct 18, 2019
DOI: https://doi.org/10.2478/mjpaa-2019-0011
Keywords
© 2019 Naimat Ullah et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Ullah, Naimat
Department of Mathematics, COMSATS UniversityIslamabad, Pakistan
Shagari, Mohammed Shehu
Department of Mathematics, Faculty of Physical Sciences, Ahmadu Bello UniversityNigeria
Azam, Akbar
Department of Mathematics, COMSATS UniversityIslamabad, Pakistan