Affiliation: | 1. Department of Mathematics, Namal Institute, Talagang Road, Mianwali 42250, Pakistan;2. Department of Mathematics, Quaid-I-Azam University 45320, Islamabad, Pakistan;3. Department of Mathematics, Cankaya University, Ankara, Turkey;4. Institute of Space Sciences, Magurele, Bucharest, Romania;5. Department of Mathematics, University of Management and Technology, Lahore, Pakistan |