Treatment of Waste Extract Lubricating Oil by Catalytic Cracking Process to Produce Light Fractions. Al-Khwarizmi Engineering Journal, [S. l.], v. 15, n. 2, p. 100–107, 2019. Disponível em: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/552.. Acesso em: 2 may. 2024.