Influence of fatty acids of pork lard and chicken animal oils on biodiesel production. REVISTA AMBIENTAL AGUA, AIRE Y SUELO, [S. l.], v. 14, n. 2, p. 1–8, 2023. DOI: 10.24054/raaas.v14i2.2785. Disponível em: https://ojs.unipamplona.edu.co/index.php/aaas/article/view/2785. Acesso em: 15 oct. 2025.