Shakhvorostov, A., Z. Nurakhmetova, G. Tatykhanova, N. Nuraje, and S. Kudaibergenov. “Synthesis and Characterization of Hydrophobically Modified Polymeric Betaines”. Chemical Bulletin of Kazakh National University, no. 3, Sept. 2015, pp. 10-20, doi:https://doi.org/10.15328/cb645.