Nguyen, Ngoc-Tue, Trung Dinh Do, Thao Vu Dinh, Linh Nguyen Ngoc, and Trung Nguyen Duc. “Porous Activated Carbon Spheres Derived from Resorcinol-Formaldehyde Resin With High Performance for Methylene Blue Removal”. Vietnam Journal of Science and Technology 63, no. 3 (June 25, 2025): 553–563. Accessed January 10, 2026. https://vjs.ac.vn/jst/article/view/19688.