1. Department of Mathematics and Statistics, College of Science, Taif University, Taif, Saudi Arabia
2. Mathematics Department, Faculty of Science, Sohag University, Sohag, Egypt
3. Mathematics Department, Faculty of Science, South Valley University, Qena, Egypt
4. Department of Computer Science, Faculty of Computers and Information, Luxor University, Qena, Egypt
5. Department of Science and Technology, University College-Ranyah, Taif University, Ranyah, Saudi Arabia