Ghasem, N. M., & Hussain, M. A. (2003). Avoiding Chaotin Instability under PID Control of Plythylene Fluidized Bed Reactor (UNIPOL Procees). ASEAN Journal of Chemical Engineering, 3(1), 26-33. Retrieved from https://dev.journal.ugm.ac.id/v3/AJChE/article/view/7575