Nguyễn Thị Thảo, Cao Văn Toàn, Phan Huy Anh, and Nguyễn Thị Thu Trang. “Proposed Narrow-Range Ground Navigation System Working Independently of Global Navigation Satellite Systems”. Journal of Military Science and Technology, no. FEE (December 30, 2022): 96–103. Accessed May 16, 2024. https://en.jmst.info/index.php/jmst/article/view/743.