NATARAJAN, R. A study of Sudden Commencements of Geomagnetic Storms at Trivandrum. MAUSAM, [S. l.], v. 20, n. 3, p. 291–296, 1969. DOI: 10.54302/mausam.v20i3.5519. Disponível em: https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/5519. Acesso em: 20 jan. 2025.