TYAGI, A. ., A. . MAZUMDAR, M. . KHOLE, S. . GAONKAR, S. . DEVI, and R. . RAMANATHAN. “Re-Determination of Normal Dates of Onset of Southwest Monsoon over India”. MAUSAM, vol. 62, no. 3, July 2011, pp. 321-8, doi:10.54302/mausam.v62i3.310.