Li, Yulin, et al. “An Optimum Condition of Surface Modification Improving the Dispersity of Nano-Silica in Organic Solvents Using 2-Propenoic-2-Methyl-3- Trimethoxysilyl-Propyl Ester Water Solution”. Asian Journal of Chemistry, vol. 23, no. 2, Oct. 2010, pp. 893-8, https://asianpubs.org/index.php/ajchem/article/view/15891.