Hùng BV. THE PROCESS OF ESTABLISHING THE ADMINISTRATIVE SYSTEM FROM NGANG PASS TO THE SOUTHWESTERN REGION (XI - XVII CENTURY). DLU JOS [Internet]. 2020 Mar. 20 [cited 2023 Dec. 10];10(1):70-8. Available from: https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/641