Rahman AM, Salman MH, Hammed KW. Catalytic Cracking of Iraqi Vacuum Gasoil Using Large and Medium Pore Size of Zeolite Catalysts. alkej. 2014;11(1):73-83. Accessed July 20, 2026. https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/216