SEPEHRIAN, H., A.R. KHANCHI, M.K. ROFOUEI, and S. WAQIF HUSAIN. 2010. “Novel Non-Thermal Synthesis and Characterization of Mesoporous Sn(IV) Silicates”. Asian Journal of Chemistry 19 (3):2093-99. https://asianpubs.org/index.php/ajchem/article/view/13783.