1. Department of Mathematics & Statistics, Hazara University, Manshera, Pakistan
2. Department of Applied Mathematics, School of Applied Natural Sciences, Adama Science and Technology University, Adama, Ethipoia
3. Department of Mathematics, Zagazig Faculty of Engineering, Zagazig University, Zagazig, Egypt
4. Faculty of Engineering and Technology, Future University, Cairo, Egypt
5. Department of Basic Science, Faculty of Engineering at Benha, Benha University, Benha, Egypt