Hiep, Dang Tan, and Bing-Hung Chen. “Application of Response Surface Methodology to Optimize Biodiesel Production from Esterification of Palmitic Acid in Excess Methanol”. <i>Vietnam Journal of Science and Technology</i> 52, no. 2 (April 2, 2014): 151–158. Accessed January 10, 2026. https://vjs.ac.vn/jst/article/view/3128.