Shaikhutdinov, Y. M., et al. “Surface - Active and Complexforming Copolymers of Sodium 2-Acrylamido-2-Methylpropanesulfonate With Ethyleneglycol Vinyl Ether”. Eurasian Chemico-Technological Journal, vol. 15, no. 4, Oct. 2013, pp. 313-9, doi:10.18321/ectj237.