1. Department of Applied Mathematics, Indian Institute of Technology Dhanbad, Dhanbad 826004, Jharkhand, India,
2. Department of Applied Mathematics, Indian Institute of Technology Dhanbad, Dhanbad 826004, Jharkhand, India
3. Department of Mathematics and Statistics, Dr. Harisingh Gour University (Central University), Sagar 470003, Madhya Pradesh, India,