RAMAKRISHNAN , K.P., and D.S.V. RAO. “Distribution  of Thunderstorms over the World”. MAUSAM 6, no. 2 (April 1, 1955): 171–175. Accessed July 9, 2025. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/4440.