Formela, K., et al. “The Influence of Materials Dosing Order and Shear Forces on the Properties of High Density Polyethylene Ground Tire Rubber Blends Obtained in Co-Rotating Twin Screw Extruder”. Polimery, vol. 59, no. 4, Apr. 2014, pp. 324-32, doi:10.14314/polimery.2014.324.