GETMANCHUK Ю., and PASALSKYI Б. “olymers se for ackage aterials anufacturing”. NTERNATIONAL CIENTIFIC-RACTICAL OURNAL OMMODITIES ND ARKETS, vol. 10, no. 2, Jan. 2011, pp. 154-6, https://journals.knute.edu.ua/commodities-and-markets/article/view/1617.