Suárez-Toriello, Victor Alejandro, Z. Y. Méndez-Martínez, J. I. Cervantes-Arista, M. F. López-Núñez, Liliana Villafaña-López, Juan José Quiroz- Ramírez, and Ricardo Guerra-Sánchez. “Obtaining Humic Substances from a Carbonaceous Industrial Residue”. Renewable energy, biomass & sustainability 2, no. 1 (June 8, 2020): 4. Accessed April 20, 2026. https://aldeser.org/journals/index.php/REBS/article/view/17.