1. Department of Mechanical Engineering, National Institute of Technology Arunachal Pradesh, Jote, Papum Pare District, Arunachal Pradesh 791113, India
2. Department of Mathematics, Rajiv Gandhi University, Rono Hills, Doimukh, Itanagar, Arunachal Pradesh 791112, India
3. Department of Mathematics, Sri Venkateswara College, University of Delhi, New Delhi 110021, India
4. Department of Basic & Applied Science, National Institute of Technology, Jote, Papum Pare District, Arunachal Pradesh 791113, India