Mahal, Harpreet Singh, Bhanu Partap Singh, and Ravi Kant. “The Effect of Co Doping on Structural, Optical and Dielectric Behaviour of TiO2 Nanoparticles”. Defence Science Journal 71, no. 03 (May 17, 2021): 390–394. Accessed June 16, 2025. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/16720.