DE, A. C., and S. N. SEN. “A Radar Study of Premonsoon Thunderstorms (Nor’westers) over Gangetic West Bengal”. MAUSAM 12, no. 1 (January 1, 1961): 51–60. Accessed September 19, 2024. http://103.215.208.102/index.php/MAUSAM/article/view/4166.