Thu Hien, Nguyen, et al. “THE RELATIONSHIP BETWEEN CENTRAL AND LOCAL AUTHORITIES IN THE GOVERNANCE MECHANISM OF THE NORTHERN FRONTIER UNDER THE LÝ DYNASTY (1009-1226)”. HNUE Journal of Science: Journal of Social Sciences, vol. 71, no. 2, Apr. 2026, pp. 98-108, https://doi.org/10.18173/2354-1067.2026-0029.