Van, Nguyen Khanh. “Role of Topo-Geographical Conditions of Northern Central Region Vietnam and the Difference of Heavy Rains Between North and South Ngang Pass”. <i>Vietnam Journal of Earth Sciences</i> 34, no. 1 (June 20, 2012): 38–46. Accessed November 9, 2025. http://vjes.vast.vn/jse/article/view/1051.