M. GOWTHAMI, J. VANDARKUZHALI. Survey on Self-Sustaining IoT Systems via Multi-Source Energy Harvesting and Adaptive Power Intelligence for Predictive Maintenance. Journal of Online Engineering Education, [S. l.], v. 17, n. 2, p. 44–49, 2026. Disponível em: https://onlineengineeringeducation.com/index.php/joee/article/view/135. Acesso em: 4 sep. 2026.