1. Department of Mathematics, SAS, Vellore Institute of Technology, Vellore, India
2. Department of Humanities and Science, Sri Venkateswara Engineering College, Tirupati, India
3. Department of Physics, College of Science, King Faisal University, Al-Ahsa, Saudi Arabia
4. Laboratory of Fluid Mechanics, Physics Department, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis, Tunisia