1. Techno India College of Technology, Newtown, Rajarhat, Kolkata-700156, India
2. Department of Mathematics, ADAMAS University, Kolkata 700 126, West Bengal, India
3. Department of Mathematics, Faculty of Science and Arts – Rabigh, King Abdulaziz University, Rabigh-25732, Saudi Arabia
4. Agricultural and Ecological Research Unit, Indian Statistical Institute, 203, B. T. Road, Kolkata 700108, India
5. Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia