Cương, Nguyễn Đức, and Hoàng Anh Tú. “Satellites Orbit Calculation With Consideration of Nonspherical Form of the Earth, Atmospheric Drag and Thrust Vector”. Journal of Computer Science and Cybernetics 27, no. 2 (April 26, 2012): 187–198. Accessed November 5, 2025. https://jcc.vast.vn/jcc/article/view/502.