VICTOR, E.I; OKECHUKWU, J.O; ALFRED, N.O. Comparison of Flexible Polyurethane Foam Produced by using Sunflower Oil, Soybean Oil and Palm Kernel Oil as Polyol. International Journal of Industrial Engineering, [S. l.], v. 3, n. 5 & 6, p. 42–46, 2019. DOI: 10.65000/36ftdf66. Disponível em: https://gjpublications.com/index.php/IJIE/article/view/110. Acesso em: 5 feb. 2026.