1. Department of Mathematics, Al-Lith University College, Umm Al-Qura University, Mecca, Saudi Arabia
2. Department of Mathematics, Faculty of Science, Assiut University, Assiut, Egypt
3. Department of Mathematical Sciences, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
4. Department of Statistics & Informatics, Faculty of Administrative Sciences, University of Aden, Aden, Yemen
5. Department of Mathematics and Statistics, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia