Paul, Suvash Chandra, and Gideon P.A.G van Zijl. 2013. “Mechanical and Durability Properties of Recycled Concrete Aggregate for Normal Strength Structural Concrete”. International Journal of Sustainable Construction Engineering and Technology 4 (1): 89-103. https://publisher.uthm.edu.my/ojs/index.php/IJSCET/article/view/647.