CHATTERJEE , RN, and PREM PRAKASH. “A Radar Study on the Frequency of Occurrence of Cumulonimbus Clouds Around Delhi”. MAUSAM 37, no. 2 (April 1, 1986): 241–244. Accessed February 27, 2024. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/2358.