All-World Solar Collector Optimum Slope Determination Basing on Site Latitude and Day Number. Journal of Solar Energy Research Updates, [S. l.], v. 3, n. 1, p. 1–12, 2016. DOI: 10.15377/2410-2199.2016.03.01.1. Disponível em: https://zealpress.com/index.php/jseru/article/view/18. Acesso em: 1 oct. 2025.