1. Department of Physics, Faculty of Science, Port Said University, Port Said 42521, Egypt
2. Arab Academy for Science and Technology (AAST), Port Said, Egypt
3. Centre for Theoretical Physics, The British University in Egypt (BUE), Cairo, Egypt
4. Department of Physics, Faculty of Science, Ain Shams University, Cairo, Egypt
5. Sultan Qaboos University, P.O. Box 17, Al-Khoud 123, Muscat, Sultanate of Oman