Sahm, Hussein, Haider Al-Jubair, and Lamia Ahmed. “Subgrade Soil Properties and Their Impact on Asphalt Road Performance”. Al-Rafidain Journal of Engineering Sciences 3, no. 2 (August 4, 2025): 245–252. Accessed October 15, 2025. https://rjes.iq/index.php/rjes/article/view/212.