NADEZHDA, Syrbu; LE DUC, Luong; ANDRE, Kholmogorov; NGUYEN, Hoang. Formation of anomalous gas fields of helium and hydrogen in the Cat Ba, Co To and Bach Long Vi islands, northern Vietnam. <b>Vietnam Journal of Earth Sciences</b>, <i>[S. l.]</i>, v. 43, n. 3, p. 301–315, 2021. DOI: 10.15625/2615-9783/16197. Disponível em: http://vjes.vast.vn/jse/article/view/16197. Acesso em: 8 nov. 2025.