Wang, Desheng, Liang Yan, and Xiaolai Wang. “Heteropoly Acid Catalyzed Micheal Addition of Benzene Sulfonamide to Ethyl Acrylate”. Asian Journal of Chemistry 24, no. 10 (May 14, 2012): 4532–4534. Accessed November 25, 2024. https://asianpubs.org/index.php/ajchem/article/view/9696.