Clear sky solar illuminance using visual band irradiance. Journal of Energy in Southern Africa, [S. l.], v. 25, n. 3, p. 11–19, 2014. DOI: 10.17159/2413-3051/2014/v25i3a2653. Disponível em: https://energyjournal.africa/article/view/2653. Acesso em: 14 nov. 2024.