RAJ, Y. E. A. ., R. SURESH, P. V. SANKARAN, and B. AMUDHA. “Seasonal Variation of 200 HPa Upper Tropospheric Features over India in Relation to Performance of Indian Southwest and Northeast Monsoons”. MAUSAM, vol. 55, no. 2, Apr. 2004, pp. 269-80, doi:10.54302/mausam.v55i2.1082.