B.Totkhuskyzy; T.K.Jumadilov; L.K.Yskak; T.Askar; J.V.Grazulevicius. FEATURES OF REMOTE INTERACTION OF ACTIVATED HYDROGELS OF POLYACRYLIC ACID AND POLYETHYLENIMINE IN SCANDIUM AND LANTHANUM SULPHATE SOLUTIONS. Academic Journal of Physical and Chemical Sciences 2021, 116-121.