Nonlinear Trade-Off Between Agitator Speed and Biodiesel Quality in Transesterification: A Lab-Scale Study. ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK, [S. l.], v. 16, n. 1, p. 73–87, 2026. DOI: 10.51747/energy.v16i1.1615. Disponível em: https://e-journal.upm.ac.id/index.php/energy/article/view/energy.v16i1.1615. Acesso em: 10 may. 2026.