Adam Gnatowski, and Mateusz Chyra. “Thermomechanical Properties of Polyamide 6 With Addition of Fly Ash from Biomass”. ACTA INNOVATIONS 25 (October 31, 2017): 38–46. Accessed May 6, 2025. https://www.actainnovations.com/index.php/pub/article/view/25_5.