Dy, Nguyen Dich, Le Duc Luong, Nguyen Van Tao, Trinh Thi Thanh Ha, Nguyen Thanh Tuan Anh, and Nguyen Manh Cuong. “Gelasian Stage and Expected Stratigraphical Units Having Similar Ages in Viet Nam”. Vietnam Journal of Earth Sciences 36, no. 1 (June 19, 2015): 90–93. Accessed November 22, 2024. https://vjs.ac.vn/index.php/jse/article/view/4146.