JOSEPH, P. V. “Monsoon Variability in Relation to Equatorial Trough Activity over Indian and West Pacific Oceans”. MAUSAM 41, no. 2 (April 2, 1990): 150–155. Accessed December 10, 2023. https://mausamjournal.imd.gov.in/index.php/MAUSAM/article/view/2560.