Kumar, Sanjay. “North-South Asymmetry of Equatorial Ionospheric Anomaly Computed from the IRI Model”. Annals of Geophysics 63, no. 3 (June 27, 2020): DM330. Accessed September 24, 2022. https://www.annalsofgeophysics.eu/index.php/annals/article/view/8324.