BRADLEY, P. A.; CANDER, L. R. Proposed terminology for the classification and parameters for the quantification of variability in ionosphere morphology. Annals of Geophysics, [S. l.], v. 45, n. 1, 2002. DOI: 10.4401/ag-3495. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3495. Acesso em: 28 oct. 2021.