MALL, R. K. ., B. R. D. . GUPTA, and K. K. . SINGH. “Application of SP AW Model Parameters - Optimum Sowing Date and Water Stress to Explain Wheat Yield Variability”. MAUSAM, vol. 52, no. 3, July 2001, pp. 567-74, doi:10.54302/mausam.v52i3.1727.