Kim, Soojin, Hyunjoong Kim, and Sungzoon Cho. “Fast Parameterless Ballistic Launch Point Estimation Based on K-NN Search”. Defence Science Journal 64, no. 1 (January 17, 2014): 41–47. Accessed August 6, 2025. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/2952.