Budiman, Arief, Ratna D Kusumaningtyas, Sutijan Sutijan, RFochmadi Rochmadi, and Suryo Purwono. 2009. “Second Generation of Biodiesel Production from Indonesian Jatropha Oil by Continuous Reactive Distillation Process”. ASEAN Journal of Chemical Engineering 9 (2), 35-48. https://dev.journal.ugm.ac.id/v3/AJChE/article/view/8057.