Dias , A., E. Oliveira, J. Costa, J. Alencar, R. Lima, P. Ribeiro, and W. Gimack. “Control of the Operating Temperature of a Photovoltaic System Using PID”. ITEGAM-JETIA, Vol. 2, no. 8, Dec. 2017, http://br940.teste.website/~itegamjetia/journal/index.php/jetia/article/view/152.