“High-Porosity Hydrochar From Oil Palm Empty Fruit Bunches Via Single-Step Hydrolytic Agent-Assisted Hydrothermal Carbonization”, Indonesian J. Sci. Technol, vol. 9, no. 3, pp. 709–720, Jul. 2025, Accessed: Jul. 15, 2025. [Online]. Available: https://ejournal.kjpupi.id/index.php/ijost/article/view/395