Lim, Meng Siang, Devapriya Chitral Wijeyesekera, Adnan Zainorabidin, and Ismail Bakar. “The Effects of Particle Morphology (Shape and Sizes) Characteristics on Its Engineering Behaviour and Sustainable Engineering Performance of Sand”. International Journal of Integrated Engineering 4, no. 4 (February 6, 2013). Accessed May 25, 2020. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/582.