Jing, Wuxing, Xu Zheng, and Changsheng Gao. “Influence of Initial State Errors on Perturbation Guidance Accuracy”. Defence Science Journal 69, no. 1 (January 10, 2019): 10-19. Accessed April 18, 2024. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/11527.