1. Department of Applied Sciences, Institute of Science and Technology, Gauhati University, Guwahati 781014, Assam, India
2. Center for Applied Mathematics and Computing, Siksha ‘O’ Anusandhan (Deemed to be University), Khandagiri, Bhubaneswar 751030, Odisha, India
3. Department of Mathematics, Siksha Bhavana, Visva-Bharati University, Santiniketan 731 235, India
4. Physical Sciences Division, Institute of Advanced Study in Science and Technology, Vigyan Path, Paschim Boragaon, Garchuk, Guwahati 781035, Assam, India