Yang, Jingwei, et al. “Synthesis and Characterization of Acrylic-Itaconic Acid Copolymer Used As an Environmental Friendly Polycarboxylic Detergent Builder”. Asian Journal of Chemistry, vol. 24, no. 11, June 2012, pp. 5038-42, https://asianpubs.org/index.php/ajchem/article/view/9843.