1. R.F. Aguilera, R.G. Eggert, C.C.G. Lagos, and J.E. Tilton, International Journal of Energy 30, 141–175 (2009).
2. National Renewable Energy Laboratory (NREL), From Biomass to Biofuels, Retrieved on June 4, 2015 from http://www.nrel.gov.
3. Synthesis of Biodiesel from Second-Used Cooking Oil
4. H. Dewajani, Rochmadi, S. Purwono, and A. Budiman, Journal of Engineering Science and Technology 10 (7), 61–69 (2015).
5. An advanced biomass gasification technology with integrated catalytic hot gas cleaning