Markiewicz, E., S. Borysiak, and D. Paukszta. “Polypropylene-Lignocellulosic Material Composites As Promising Sound Absorbing Materials”. Polimery, vol. 54, no. 6, Aug. 2022, pp. 430-5, https://ichp.vot.pl/index.php/p/article/view/1218.