C. Ahalya, M. Vasavi, M. Prathyusha, S. Sania Afrin, and S. Sravani. “Footstep Power Generation Using Piezo Electric Sensors”. Journal of Power Electronics and Devices, vol. 8, no. 2, July 2022, pp. 20-25, http://matjournals.co.in/index.php/JOPED/article/view/867.