Improving Photovoltaic Panel (PV) Efficiency via Two Axis Sun Tracking System. Journal of Engineering, [S. l.], v. 26, n. 4, p. 123–140, 2020. DOI: 10.31026/j.eng.2020.04.09. Disponível em: https://joe.uobaghdad.edu.iq/index.php/main/article/view/990.. Acesso em: 12 may. 2024.