Ferdous, K., Uddin, M.R., Uddin, M.R., Khan, M.R. and Islam, M. 2014. Optimization of Three-Step Method For Biodiesel Production From Waste Cook Oil. Journal of Chemical Engineering. 27, 2 (Jan. 2014), 6–10. DOI:https://doi.org/10.3329/jce.v27i2.17775.