Wongsaroj, K., T. Sawadsevi, N. Prathinthong, and P. Wongsrivej. “Biomass Briquette Production from Jatropha”. Engineering and Applied Science Research, vol. 38, no. 1, May 2012, pp. 65-72, https://ph01.tci-thaijo.org/index.php/easr/article/view/1589.