P.K., Kolay, and Pui M.P. “Peat Stabilization Using Gypsum and Fly Ash”. Journal of Civil Engineering, Science and Technology 1, no. 2 (April 1, 2010): 1–5. Accessed December 29, 2024. https://publisher.unimas.my/ojs/index.php/JCEST/article/view/75.