XENOS, T. D. A single-station model suitable for f0F2 mapping. Annals of Geophysics, [S. l.], v. 42, n. 1, 1999. DOI: 10.4401/ag-3706. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3706. Acesso em: 18 apr. 2024.