M. H. Mangrola, V. G. Joshi, and B. H. Parmar. “Preparation and Characterization of TiO2 Nanocrystals Using Titanium Isopropoxide”. Journal of International Academy of Physical Sciences, vol. 16, no. 3, Sept. 2012, pp. 265-74, https://www.iaps.org.in/journal/index.php/journaliaps/article/view/915.