Zhatkanbaev, E., & Zhatkanbaeva, Z. (2011). Polyampholitic hydrogels on the basis of a vinyl ether monoethanolamine and maleic anhydride in interpolymer reactions. Chemical Bulletin of Kazakh National University, 61(1), 351-356. Retrieved from https://bulletin.chemistry.kz/index.php/kaznu/article/view/937