Bai, Ruijiao, Richeng Zhang, Haofei Qi, Xilong Yan, and Ligong Chen. “Preparation of Sodium Sulfonates Using by Copper As Catalyst”. Asian Journal of Chemistry 26, no. 21 (September 30, 2014): 7226–7228. Accessed July 17, 2024. https://asianpubs.org/index.php/ajchem/article/view/26_23_30.