AHMED, D. J. .; AL-NIDAWI, M. R.; CHALI, M. .; BAHJAT , A. . Purification of Used Lubricating Oils Using Vacuum Distillation. Journal of Petroleum Research and Studies, [S. l.], v. 14, n. 1, p. 111-130, 2024. DOI: 10.52716/jprs.v14i1.766. Disponível em: https://jprs.gov.iq/index.php/jprs/article/view/766. Acesso em: 20 dec. 2024.