Yatsyshyn, B. P., and N. I. Domantsevich. “Changing of Polyethylene Film Structure During Long-Term Aging”. Physics and Chemistry of Solid State 21, no. 1 (March 29, 2020): 157–166. Accessed April 24, 2024. https://journals.pnu.edu.ua/index.php/pcss/article/view/3013.