1. Department of Mathematics, Amity Institute of Applied Sciences, Amity University, Noida, Uttar Pradesh, India.
2. Department of Mathematics, School of Computer Science Engineering and Technology, Bennett University, Greater Noida, Uttar Pradesh, India.
3. Independent Researcher, New Delhi, India.
4. Department of Applied Mathematics, Amity Institute of Applied Sciences, Amity University Jaipur, Rajasthan, India.