Hufenbach, W., M. Gude, S. Geller, and A. Czulak. “Manufacture of Natural Fiber-Reinforced Polyurethane Composites Using the Long Fiber Injection Process”. Polimery 58, no. 6 (June 30, 2013): 473-475. Accessed April 12, 2024. http://polimery.ichp.vot.pl/index.php/p/article/view/754.