Sampattagul, Sate, Pranee Nutongkaew, and Tanongkiat Kiatsiriroat. “Life cycle assessment of palm oil biodiesel production in Thailand”. Journal of Renewable Energy and Smart Grid Technology 6, no. 1 (December 18, 2014): 1–14. accessed April 9, 2025. https://ph01.tci-thaijo.org/index.php/RAST/article/view/26175.