BIBL, K. Evolution of the ionosonde. Annals of Geophysics, [S. l.], v. 41, n. 5-6, 1998. DOI: 10.4401/ag-3810. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3810. Acesso em: 20 apr. 2024.