Gopalakrishnan1, R., and D. Govindarajan2. “Property Improvement of Ordinary Portland Cement by Incorporating With Nanosilica”. Asian Journal of Chemistry 25, no. 20 (May 7, 2013): 217–219. Accessed November 25, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_Supplementary%20Issue_60.