Ebrahimi, S. et al. 2017. Transesterification of Waste Cooking Sunflower Oil by Porcine Pancreas Lipase Using Response Surface Methodology for Biodiesel Production. Applied Food Biotechnology. 4, 4 (Sep. 2017), 203–210. DOI:https://doi.org/10.22037/afb.v4i4.16904.