1. Institute of Basic and Applied Sciences, Egypt-Japan University of Science and Technology 1 , New Borg El-Arab, 21934 Alexandria, Egypt
2. Department of Engineering Mathematics and Physics, Faculty of Engineering, Fayoum University 2 , 3514 Fayoum, Egypt
3. Department of Mathematics and Engineering Physics, Faculty of Engineering, Mansoura University 3 , 35516 Mansoura, Egypt
4. Department of Engineering Physics and Mathematics, Faculty of Engineering, Tanta University 4 , 31527 Tanta, Egypt
5. Department of Mathematics, Faculty of Science, Sohag University 5 , 82524 Sohag, Egypt