00618naa#a2200181#i#450# EN\\bibl\34255 20240517063248.5 2686-9896 20190415b2019####ek#y0engy0150####ca RU CHEMICAL MODIFICATION OF COPOLYMERS Journal article Angarsk Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University» 2019 1 с. Journal article local Prozorova Galina Firsovna Kuznecova Nadezhda Petrovna Pozdnyakov Aleksandr Sergeevich angtu.editorum.ru