CHIRKOV, Y. B. The study of local sources of ULF geoelectric signals with steep fronts. Annals of Geophysics, [S. l.], v. 47, n. 1, 2004. DOI: 10.4401/ag-3273. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3273. Acesso em: 29 apr. 2024.