BIANCHI, C.; CIRAOLO, L.; SCOTTO, C. Low ionospheric observations by means of the software receiver for Omega signal. Annals of Geophysics, [S. l.], v. 37, n. 1, 1994. DOI: 10.4401/ag-4237. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4237. Acesso em: 1 apr. 2026.