1. Department of Mathematics, Government College University Faisalabad, Faisalabad 38000, Pakistan
2. Department of Computer Science and Mathematics, Lebanese American University, Beirut 11022801, Lebanon
3. Institute of Space Sciences, R76900 Magurele-Bucharest, Romania
4. Department of Medical Research, China Medical University, Taichung 40402, Taiwan
5. Department of Mathematics, College of Education, University of Sulaimani, Sulaimani 46001, Iraq
6. Department of Mathematics, Faculty of Science, Jazan University, Jazan 45142, Saudi Arabia