Boral, P., and T. Nieszporek. “Geometric Analysis of Plasticizing System in the Extruder Consisting of Two Cone Worms”. Polimery 57, no. 7-8 (August 30, 2012): 571-576. Accessed May 10, 2024. http://ichp.vot.pl/index.php/p/article/view/855.