Shihab, Bahaa F. “Influence of Chemical and Thermal Treatment on the Purity of Silica Extracted from Rice Husk”. Iraqi Journal of Physics 16, no. 39 (January 5, 2019): 117–123. Accessed November 22, 2024. https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/109.