Nguyen, Thi Lan Huong, Quang Thong Trinh, and Viet Phuong Trieu. 2017. “Implementation of a Loosely Coupled Integration INS GPS System Using Kalman Filter Based on Improved INS System”. Old Journal, no. 116 (January):1-5. https://jst.vn/index.php/old/article/view/430.