1. Department of Mathematics, College of Science and Humanities in Al-Aflaj, Prince Sattam bin Abdulaziz University, Saudi Arabia
2. Department of Mathematics, Faculty of Science, Assiut University, Assiut, Egypt
3. King Khalid University, Faculty of Science, Physics Department, P. O. Box 9004, Abha, Saudi Arabia
4. Laboratory of Thermal Processes, Center for Energy Research and Technology, Borj-Cedria, BP: 95, Tunisia
5. Department of Mathematics, College of Science, P. O. Box 11099, Taif University, Taif 21944, Saudi Arabia