Li, Xuepeng, Caiping Yao, Chunhua Xiong, and Jianrong Li. 2011. “Adsorption of Pb(II) in Aqueous Solution on SQD-85 Resin”. Asian Journal of Chemistry 23 (8):3387-92. https://asianpubs.org/index.php/ajchem/article/view/10726.