Synthesis of alkanolamide nonionic surfactant using used cooking oil. Vietnam Journal of Catalysis and Adsorption, [S. l.], v. 7, n. 2, p. 105–110, 2018. Disponível em: https://jca.edu.vn/index.php/jca/article/view/646.. Acesso em: 28 feb. 2025.