Truong, Quang Hieu, and Thi Hanh Tong. 2016. “Selection of Method for Calculating the Standard Deviation of midstation’s Position in Order to Evaluate the Precision of Closed Connecting Traverse”. Journal of Geodesy and Cartography, no. 28 (June):58-64. https://doi.org/10.54491/jgac.2016.28.185.