SRIVASTAVA, H. N. ., and S. S. . SINGH. “EMPIRICAL ORTHOGONAL FUNCTIONS ASSOCIATED WITH PARAMETERS USED IN LONG RANGE FORECASTING OF INDIAN SUMMER MONSOON”. MAUSAM, vol. 44, no. 1, Jan. 1993, pp. 29-34, doi:10.54302/mausam.v44i1.3743.