SABOUR, Mohammad Reza; SHAHI, Mahsa. Spent Bleaching Earth Recovery of Used Motor-Oil Refinery. Civil Engineering Journal, [S. l.], v. 4, n. 3, p. 572–584, 2018. DOI: 10.28991/cej-0309116. Disponível em: https://civilejournal.org/index.php/cej/article/view/555. Acesso em: 20 sep. 2025.