A. U, Saleh, and Siti Amely Jumaat. “The Hybrid Photovoltaic-Thermoelectric Generator Configurations for Energy Performance Improvement”. International Journal of Integrated Engineering, vol. 14, no. 3, June 2022, pp. 1-13, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/9059.