RAO, Y. P., K. S. RAMAMURTI, and M. C. SINHA. “A Scheme for Deriving Grid Point Values from Observatory Reports for Numerical Weather Prediction”. MAUSAM 23, no. 4 (October 1, 1972): 467–478. Accessed November 23, 2024. http://103.215.208.102/index.php/MAUSAM/article/view/5306.