Diamant, Eng, and Marisa Handajani. “Optimization and Kinetics Study of Bioethanol Production from Palm Oil Mill Effluent under Anaerobic Process”. Jurnal Teknik Lingkungan 23, no. 1 (April 1, 2017): 78–86. Accessed February 4, 2026. https://www.envengjournal.com/index.php/jtl/article/view/235.