Aqar, Dhia Yasser. “A Study of the Dynamics and Control of the Model IV Fluidized Catalytic Cracking Process”. Journal of Petroleum Research and Studies 5, no. 1 (June 1, 2014): 1-26. Accessed April 3, 2025. https://jprs.gov.iq/index.php/jprs/article/view/103.