“Effect of the Crosslinking Between the Asphalt and Polyethylene on the Viscoelastic Properties of Polyethylene Melt Extruding Through Capillary”. University of Thi-Qar Journal of Science, vol. 2, no. 4, Feb. 2011, pp. 73-78, http://mail.jsci.utq.edu.iq/index.php/main/article/view/448.