Omar et al., Rohayu Che. “Slope Improvement Using Combination of Coconut Husks, Coconut Flakes, Luffa, Pineapple Leaves and Vege-Grout”. International Journal of Advanced Science and Technology 28, no. 11 (October 20, 2019): 51 - 58. Accessed July 18, 2024. http://sersc.org/journals/index.php/IJAST/article/view/1040.