Cavalcanti, Rodrigo Machado, Elissandro Monteiro do Sacramento, Lutero Carmo de Lima, and Natasha Esteves Batista. 2022. “Study Comparison of the Efficiency of a Photovoltaic System With Fixed Panels and With Solar Tracker in the Northwest of Brazil”. International Journal of Advanced Engineering Research and Science 9 (4). https://journal-repository.com/index.php/ijaers/article/view/4918.