Pełka, J., and E. Kowalska. 2022. “Modification of Thermoplastic Polymers With Scrap Paper Cellulose Fibres. Part 2. Modification of Polyolefins With Scrap Paper Cellulose Fibres”. Polimery 46 (3):201-7. https://polimery.ichp.vot.pl/index.php/p/article/view/2061.