Roger, Proenza Y., Camejo C. José Emilio, and Ramos H. Rubén. “Validation of the Procedure: Quantification of the Degradation Index of Photovoltaic Grid Connection Systems”. Journal La Multiapp 2, no. 5 (December 20, 2021): 8-13. Accessed August 12, 2022. http://www.newinera.com/index.php/JournalLaMultiapp/article/view/492.