Królikowski, K., and K. Piszczek. “Separation of High-Density Polyethylene poly(ethylene Terephthalate) Poly(vinyl Chloride) Mixtures Based on Differences in Their Hardness”. Polimery 62, no. 7-8 (January 15, 2021): 599–602. Accessed November 21, 2024. https://polimery.ichp.vot.pl/index.php/p/article/view/326.