Lan, Luu Thi Phuong, Ellwood Brooks B., Tomkin Jonathan H., Nestell Galina P., Nestell Merlynd K., Ratcliffe Kenneth T., Rowe Harry, et al. “Correlation and High-Resolution Timing for Paleo-Tethys Permian-Triassic Boundary Exposures in Vietnam and Slovenia Using Geochemical, Geophysical and Biostratigraphic Data Sets”. Vietnam Journal of Earth Sciences 40, no. 3 (June 4, 2018): 253–270. Accessed November 8, 2025. http://vjes.vast.vn/jse/article/view/12617.