I. Al-Hadidy, Abdul-Rahim. “Evaluation of Pyrolisis Polypropylene Modified Asphalt Paving Materials”. Al-Rafidain Engineering Journal (AREJ) 14, no. 2 (June 28, 2006): 36–50. Accessed August 8, 2025. https://ojs.uomosul.edu.iq/index.php/arej/article/view/26744.