Nugraha, Billy, Nadiahun Nasywa, Melodi Laora Putri, Soma Satria, and Yoga Ulya Mubarok. “Valorization of Palm Oil Mill Effluent (POME) for Renewable Energy: A Systematic Review on Biogas Potential and Policy Implications in Indonesia”. International Journal of Oil Palm 9, no. 1 (August 31, 2026): 20–30. Accessed September 1, 2026. https://ijop.id/index.php/ijop/article/view/159.