1. Faculty of Science, Department of Mathematics, Khon Kaen University, Khon Kaen, Thailand
2. Department of Mathematics and Statistics, Hazara University, Mansehra, Pakistan
3. Faculty of Engineering, Department of Mathematics, Zagazig University, Zagazig, Egypt
4. Faculty of Engineering and Technology, Future University, Cairo, Egypt
5. Basic Engineering Mathematics Department, Benha Faculty of Engineering, Benha University, Egypt
6. College of Engineering and Technology, American University of the Middle East, Egaila, Kuwait