Danwanichakul, P., and D. Danwanichakul. “Adsorption of Anionic, Cationic and Disperse Dyes With Activated Pyrolytic Tire Char”. Engineering and Applied Science Research, vol. 42, no. 4, Nov. 2015, pp. 292-7, https://ph01.tci-thaijo.org/index.php/easr/article/view/33307.