IDAN, Fatimah Kadhim I; OBYED, Saleem Mohammed. 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://www.alkej.uobaghdad.edu.iq/index.php/alkej/article/view/552. Acesso em: 8 jan. 2026.