1. School of Mathematical Sciences, Zhejiang Normal University, 321004, China
2. Department of Mathematical Sciences Federal Urdu University of Arts, Sciences & Technology, Islamabad 44000, Pakistan
3. DBS&H, CEME, National University of Science and Technology, Islamabad Pakistan
4. Department of Mathematics and Sciences, College of Humanities and Sciences Prince Sultan University, Riyadh 11586, Saudi Arabia
5. Department of Mathematics, Air University, PAF Complex E-9, Islamabad, 44000, Pakistan
6. Department of Mathematics, Faculty of Science, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan