CAO, Dinh Trong et al. The characteristics of seismic activity in the ladder zone of Da river hydro-electric plants. Vietnam Journal of Science, Technology and Engineering, [S.l.], v. 61, n. 1, p. 82-91, mar. 2019. ISSN 2525-2461. Available at: <http://vietnamscience.vn/index.php/VJSTE/article/view/196>. Date accessed: 17 june 2019.