Polymer-clay composites of polyacrylates as sorbents of heavy metal ions - NarodА.; SarsheshevaА.; Beysebekov, M.; Iminova, R.; Kayralapova, G.; Zhumagaliyeva, Shynar; Beysebekov, M.; Abilov, Zharylkasyn (Chemical Bulletin of Kazakh National University, 2012)