Hafyan, R. H., W. D. Prasetyo, L. Bhullar, Z. A. Putra, M. R. Bilad, M. D. H. Wirzal, and N. A. H. M. Nordin. “Multi-Objective Optimization of Succinic Acid Production from Empty Fruit Bunch”. ASEAN Journal of Chemical Engineering, Vol. 19, no. 1, June 2019, pp. 1-11, https://journal.ugm.ac.id/v3/AJChE/article/view/9075.