1. Department of Mathematics, Quaid-I-Azam University, Islamabad, Pakistan
2. Department of Math & Stats, International Islamic University, Islamabad, Pakistan
3. Department of Mathematics, Gilan-E-Gharb Branch, Islamic Azad University, Gilan-E-Gharb, Iran
4. Abdus Salam School of Mathematical Sciences, Government College University, Lahore, Pakistan
5. Office of Research, Innovation and Commercialization, University of Management and Technology, Lahore, Pakistan