MENDES DA COSTA, A. Indirect determination of the energy spectra of particles precipitated in the lower ionosphere associated with solar proton events. Geofisica Internacional, [S. l.], v. 39, n. 1, p. 13–19, 2000. DOI: 10.22201/igeof.00167169p.2000.39.1.290. Disponível em: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/659. Acesso em: 23 jul. 2024.