Junsirisikul, Kanokpakorn, and Anchaleeporn W.Lothongkum. 2013. “Effects of bed length of adsorbent and humid air flow rate on adsorption efficiency of silica gel”. Engineering and Applied Science Research 27 (4):47-55. https://ph01.tci-thaijo.org/index.php/easr/article/view/6679.