BRAVO, Silvia. On the problems of using? Inv in study of non-trapped cosmic ray particles. Geofísica Internacional, [S. l.], v. 17, n. 2, p. 197–209, 1978. DOI: 10.22201/igeof.00167169p.1978.17.2.933. Disponível em: https://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1466. Acesso em: 17 feb. 2026.