1. Department of Mathematics, Thiruvalluvar University, Vellore, Tamil Nadu, India
2. School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China
3. Department of Mathematics, Prince Sattam bin Abdul Aziz University, Al Kharj, Saudi Arabia
4. Electrical Engineering Department, Faculty of Engineering, Minia University, Minia, Egypt
5. New Urban Communities Authority, New Minia City, Minia, Egypt