Le, Huong, Ngan Huynh, Tan Phan, and Hoa Tran. 2010. “BIODIESEL FROM FAT OF TRA CATFISH VIA KOH/γ-Al2O3 CATALYST USING ULTRASONIC MIXING”. Science and Technology Development Journal 13 (2), 72-80. https://doi.org/https://doi.org/10.32508/stdj.v13i2.2119.