SPENCER, P. S. J.; MITCHELL, C. N. Imaging of fast moving electron-density structures in the polar cap. Annals of Geophysics, [S. l.], v. 50, n. 3, 2007. DOI: 10.4401/ag-3074. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3074. Acesso em: 23 apr. 2024.