Choong, T. Y., Paterson, W. R., & Scoot, D. M. (2004). A Neat Way to Calculate the Gas Velocity from the Ergun Equation in a Packed Bed. ASEAN Journal of Chemical Engineering, 4(1), 8-10. Retrieved from https://jurnal.ugm.ac.id/v3/AJChE/article/view/7578