A. Galieva, G. Kudaibergen, E. Tazhbaev, M. Burkeev, T. Zhumagalieva, and A. Kazhmuratova, “Study of the effect of various factors on liberation of Nickel nanoparticles into hydrogels based on copolymers of acrylic acid β-vyniloxyethylamide with acrylic acid”, Chemical Bulletin of Kazakh National University, vol. 65, no. 1, pp. 235-237, Mar. 2012.