BHARGAVA , B. N., and U. V. GOPALA RAO. “Ionospheric Disturbances Associated With Magnetic Storms at Kodaikanal”. MAUSAM 10, no. 2 (April 1, 1959): 203–208. Accessed December 8, 2024. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/4051.