N. N. N. . Nasrudin, N. S. . Mohd Rodzi, N. . A. . Ismail, and M. S. Roslan, “The Derivation of Silica from Coconut Husk Ash: Preliminary Study”, MARI, vol. 6, no. 1, pp. 112–118, Jan. 2025, Accessed: Apr. 07, 2026. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/mari/article/view/17954