Handogo, R., G. Wibawa, M. A. Hidayat, and P. I. Jakarta. “Steady State and Dynamic Interaction Analysis in Multivarible Control System”. ASEAN Journal of Chemical Engineering, Vol. 4, no. 1, Dec. 2004, pp. 39-46, https://journal.ugm.ac.id/v3/AJChE/article/view/7586.