Gourav Verma, Suman Arora, Geeta Nijhawan,. “An Improved Framework for Hybrid Energy Harvesting for Underwater Sensor Nodes and IoT”. Design Engineering (September 17, 2021): 7874- 7886. Accessed May 3, 2024. http://www.thedesignengineering.com/index.php/DE/article/view/4411.