Rith, Monorom, Nechoh A. Arbon, and Jose Bienvenido M. Biona. 2019. “Optimization of diesel injection timing, producer gas flow rate, and engine load for a diesel engine operated on dual fuel mode at a high engine speed”. Engineering and Applied Science Research 46 (3):192-99. https://ph01.tci-thaijo.org/index.php/easr/article/view/171330.