MALURKAR, S. L. “THE SOLAR FLARE EFFECT AT ALIBAG ON JUNE 13th. 1951”. Annals of Geophysics 7, no. 2 (November 25, 1954): 215–219. Accessed September 20, 2021. https://www.annalsofgeophysics.eu/index.php/annals/article/view/5701.