Hung, Khuong, and Nguyen Tuyen. “Identifying the Coal Seams and Their Sedimentary Environments in the Nui Beo Mine, Quang Ninh Province Using K-Means and Regression Methods”. Science & Technology Development Journal: Science of the Earth & Environment 6, no. 2 (December 31, 2022): 583-599. Accessed November 21, 2024. https://stdjsee.scienceandtechnology.com.vn/index.php/stdjsee/article/view/692.