1. Department of Mathematics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, Tamil Nadu, India
2. Department of Mathematics and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia
3. Department of Mathematics, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur 603203, Tamil Nadu, India
4. Department of Mathematics, Ege University, Bornova, 35100 Izmir, Turkey