1. Department of Mathematics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, India
2. Department of Mathematics, Bharath Institute of Higher Education and Research, Chennai 600073, India
3. Department of Applied Science, Umm Al-Qura University, Mecca 24341, Saudi Arabia
4. Department of Applied Mathematics with Oceanology and Computer Programming, Vidyasagar University, Midnapore 721102, India