Anusha, K S, Ramachandran Ramanathan, and M Jayakumar. “Device Free Localisation Techniques in Indoor Environments”. Defence Science Journal 69, no. 4 (July 15, 2019): 378–388. Accessed June 15, 2025. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/13214.