Ghimire, B. D., N. P. Chapagain, V. Basnet, K. Bhatta, and B. Khadka. 2020. “Variation of GPS- Tec Measurements of the Year 2014: A Comparative Study With IRI - 2016 Model”. Journal of Nepal Physical Society 6 (1):90-96. https://doi.org/10.3126/jnphyssoc.v6i1.30555.