1. Department of Mathematics, Indira Gandhi Mahavidyalaya, Ralegaon 445402, India
2. Centre of High Energy and Condensed Matter Physics, Department of Physics, Utkal University, Bhubaneswar 751004, India
3. Department of Physics, Indira Gandhi Institute of Technology, Sarang, Dhenkanal, Odisha 759146, India
4. Department of Mathematics, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500078, India