Cost, Emission, and Thermo-Physical Determination of Heterogeneous Biodiesel from Palm Kernel Shell Oil: Optimization of Tropical Egg Shell Catalyst. Indonesian Journal of Science and Technology, [S. l.], v. 9, n. 1, p. 1–32, 2024. Disponível em: https://ejournal.kjpupi.id/index.php/ijost/article/view/345.. Acesso em: 6 sep. 2025.