Santaweesuk, C., A. Janyalert-adun, and P. Techarungpaisan. “The physical properties of physic nut oil and performance of diesel engine using physic nut oil as a fuel”. Engineering and Applied Science Research, vol. 33, no. 6, Feb. 2013, pp. 613-24, https://ph01.tci-thaijo.org/index.php/easr/article/view/6022.