Retdiyano Aliviar S, Yandra Arkeman and Erliza Hambali 2019. Indonesia’s Oil Palm Bioenergy Sustainability Assessment System using Indonesian Bioenergy Sustainability Indicators (IBSI). International Journal of Engineering and Management Research. 9, 1 (Feb. 2019), 171–176. DOI:https://doi.org/10.31033/ijemr.9.1.16.