1. Geosciences and Technology Division, CSIR North East Institute of Science and Technology, Jorhat, India
2. Department of Physics, Gauhati University, Guwahati, India
3. Applied Civil Engineering Division, CSIR North East Institute of Science and Technology, Jorhat, India
4. Department of Civil Engineering, Assam Engineering College, Guwahati, India
5. North Eastern Council, Shillong, India