Huda, H., R. Renanto, T. R. Biyanto, W. Wu, dan V. S. K. Adi. Oil Refinery Heat Exchanger Network Cleaning Scheduling Strategy With Unit Cleanability Consideration. Vol. 20, no. 1, Juni 2020, hlm. 31-48, https://jurnal.ugm.ac.id/v3/AJChE/article/view/9097.