STANKOV, S. M. A steady-state F-region model and its use for satellite data analysis. Annals of Geophysics, [S. l.], v. 39, n. 5, 1996. DOI: 10.4401/ag-4024. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4024. Acesso em: 26 oct. 2021.