Corncob-Derived Sulfonated Magnetic Solid Catalyst Synthesis as Heterogeneous Catalyst in The Esterification of Waste Cooking Oil and Bibliometric Analysis. Indonesian Journal of Science and Technology, [S. l.], v. 9, n. 1, p. 109–124, 2024. Disponível em: https://ijost.upi.edu/index.php/ijost/article/view/399. Acesso em: 7 jun. 2026.