1. Department of Mathematics, School of Sciences, Maulana Azad National Urdu University, Hyderabad, India
2. Department of Mathematics, College of Science, Jazan University, Jazan, Kingdom of Saudi Arabia
3. Department of Mathematics, Faculty of Arts and Sciences, K.S.U Kahramanmaras, Turkey
4. Department of Mathematics, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia