For citations:
Ukhartseva I.Yu., Tsvetkova Е.A., Goldade V.А. Polymer packaging materials for foodstuffs: classification, functions and requirements. Plasticheskie massy. 2019;(9-10):56-64. (In Russ.) https://doi.org/10.35164/0554-2901-2019-9-10-56-64