Blim, A., E. Ołdak, A. Wasiak, and L. Jarecki. “Effects of Zone Heating on Pet Fibers Structures and Dynamics of Melt Spinning Process. Part I. Crystallinity and Molecular Orientation”. Polimery, vol. 50, no. 1, Sept. 2022, pp. 48-59, http://ichp.vot.pl/index.php/p/article/view/1608.