Naidu, V.P.S., Girija G., and J.R. Raol. “Estimation of Launch and Impact Points of a Flight Trajectory Using U-D Kalman Filter/Smoother”. Defence Science Journal 56, no. 4 (October 1, 2006): 451-463. Accessed March 29, 2024. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/1911.