SPENCER, P. S. Ionospheric precursors to scintillation activity. Annals of Geophysics, [S. l.], v. 57, n. 1, p. A0185, 2014. DOI: 10.4401/ag-6389. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/6389. Acesso em: 5 dec. 2021.