Linh, Nguyen Thuy, Bui Van Duan, and Nguyen Anh Duong*. “Methods for Constructing VS30 Maps from Geology, Borehole and Topography Data”. <i>Vietnam Journal of Earth Sciences</i> 38, no. 4 (December 12, 2016): 356–371. Accessed November 8, 2025. http://vjes.vast.vn/jse/article/view/8992.