Singhasiri, T. “Optimum Conditions of Activated Carbon Production from Mimosa Pigra L. Using Sodium Chloride and Zing Chloride Activation”. Engineering and Applied Science Research, vol. 41, no. 4, Jan. 2015, pp. 527-35, https://ph01.tci-thaijo.org/index.php/easr/article/view/28316.