SIVARAMAKRISHNAN, M. V. “The Origin of Electric Charge Carried by Thunderstorm Rain in the Tropics”. MAUSAM 12, no. 3 (July 1, 1961): 447–464. Accessed April 18, 2025. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/4217.