Bhardwaj, S. C., Vidyarthi, A., Jassal, B. S., & Shukla, A. K. (2021). Estimation and Assessment of Ionospheric Slant Total Electron Content (STEC) Using Dual-frequency NavIC Satellite System. Journal of Graphic Era University, 9(2), 137–156. https://doi.org/10.13052/jgeu0975-1416.923