S.S. RASHINKAR, et al. “A CRITICAL REVIEW-PHOTOVOLTAIC MAXIMUM POWER POINT TRACKING CONTROL SYSTEM USING P&O TECHNIQUE”. International Journal of Innovations in Engineering Research and Technology, vol. 3, no. 12, Mar. 2021, pp. 1-6, https://repo.ijiert.org/index.php/ijiert/article/view/984.