Palaniandy, Samayamutthirian, Khairul Nizar Ismail, and Khairun Azizi Mohd Azizli. “Physical and Chemical Characterization of Silica Based Raw Materials from Industrial Waste”. Malaysian Journal of Science 21 (December 26, 2002): 161–164. Accessed July 1, 2024. https://jpmm.um.edu.my/index.php/MJS/article/view/8881.