“Comparative Study on Photovoltaic Pumping Systems Driven by Different Motors Optimized with Sliding Mode Control”, Int. j. eng. technol. innov., vol. 7, no. 3, pp. 201–216, Jun. 2017, Accessed: Oct. 15, 2026. Available: https://ojs.imeti.org/index.php/IJETI/article/view/294