Chương, Văn Đức, Trần Văn Thắng, Văn Đức Tùng, Phan Doãn Linh, and Lê Triều Việt. “Ophiolit Zone of Thai Nguyen - Cao Bang”. Vietnam Journal of Earth Sciences 25, no. 2 (March 19, 2018): 142–149. Accessed November 8, 2025. http://vjes.vast.vn/jse/article/view/11895.