Saiwarin, W., C. Napia, and T. Sinsiri. “The Study of Leaching of Heavy Metals Contaminant in Cement Pastes Containing Bagasse Ashes”. Engineering and Applied Science Research, vol. 41, no. 2, Sept. 2014, pp. 181-90, https://ph01.tci-thaijo.org/index.php/easr/article/view/21784.