Wongsaroj, Kriengkrai, Thanit Sawadsevi, Naris Prathinthong, and Pratarn Wongsrivej. 2012. “Biomass Briquette Production from Jatropha”. Engineering and Applied Science Research 38 (1):65-72. https://ph01.tci-thaijo.org/index.php/easr/article/view/1589.