Sampao, S., Sukchai, S. and Thanarak, P. (2018) “Solar-Assisted Biodiesel Production from Used Cooking Oil”, Journal of Renewable Energy and Smart Grid Technology, 13(2). Available at: https://ph01.tci-thaijo.org/index.php/RAST/article/view/99820 (Accessed: 3 May 2024).