Nguyen Manh Cuong, Tran Van Nam, and Duong Viet Dung. “RESEARCH ON THE EFFECT OF FUEL INJECTION TIMING TO EXHAUST COMPONENTS OF DIESEL ENGINE USING BIODIESEL B20 DERIVED FROM FISH FAT”. UTEHY Journal of Applied Science and Technology, Vol. 12, Jan. 2017, pp. 29-35, http://tapchi.utehy.edu.vn/index.php/jst/article/view/232.