Junsirisikul, K., and A. W.Lothongkum. “Effects of bed length of adsorbent and humid air flow rate on adsorption efficiency of silica gel”. Engineering and Applied Science Research, vol. 27, no. 4, Mar. 2013, pp. 47-55, https://ph01.tci-thaijo.org/index.php/easr/article/view/6679.