Zhao, Q., Lin, M., Dang, S., & Hua, Z. (2014). Acrylamide/2-Acrylamido-2-methylpropanesulfonic acid/1-Vinyl-2-pyrrolidinone Terpolymeric Microspheres by Orthogonal Experiments. Asian Journal of Chemistry, 26(17), 5615–5618. https://doi.org/10.14233/ajchem.2014.18168