Rojviroon, T., S. Sirivithayapakorn, and O. Rojviroon. “Removal of Color and COD from Dyestuff Industry with Continuous-photocatalytic Reactor”. Frontiers in Engineering Innovation Research, vol. 17, no. 1, June 2019, pp. 41-54, https://ph01.tci-thaijo.org/index.php/jermutt/article/view/241928.