Kumar, Praveen, Dr MBalasubramaniam, BS Murty, and KM Rajan. “Infrared and Structural Studies of Micro and Nano-Crystalline Ta Doped Lead Zirconate Titanate Ceramics”. Defence Science Journal 68, no. 4 (June 26, 2018): 412-416. Accessed September 20, 2019. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/12314.