Smriti Srivastava and Rajneesh K. Srivastava, & Shivangi Trivedi and Mridula Tripathi. (2010). Negative Photoconductivity Effects of Titanium Dioxide and Tungsten Oxide Prepared by Sol-Gel Method. Journal of International Academy of Physical Sciences, 14(2), 265–271. Retrieved from https://www.iaps.org.in/journal/index.php/journaliaps/article/view/339