H. Ismail, Alhassan, and Basim Sh. Abed. “Using Polyurethane Coating of Concrete Pipes With Acid Attack Resistance in Sewer Lines”. International Journal of Engineering and Technology 7, no. 4.20 (November 28, 2018): 118–122. Accessed May 13, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/25861.