1. Department of Mathematics, BV Raju Institute of Technology, Narsapur, Medak 502313, Telangana, India
2. Department of Mathematics, GITAM School of Science, GITAM Deemed to be University, Hyderabad, Rudraram 502329, Telangana, India
3. Department of Mathematics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, Tamil Nadu, India
4. Department of Mathematics, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur 603203, Kanchipuram, Chennai, Tamil Nadu, India
5. Department of Mathematics, College of Natural and Applied Sciences, University of Dar es Salaam, Dar es Salaam, Tanzania
6. Department of Mathematics, North Eastern Hill University, Shillong 793022, Meghalaya, India