OTAOLA, J. A. Sidereal cosmic ray variation and its relation with the interplanetary magnetic field polarity. Geofísica Internacional, [S. l.], v. 14, n. 4, p. 317–328, 1974. DOI: 10.22201/igeof.00167169p.1974.14.4.966. Disponível em: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1527. Acesso em: 23 jul. 2024.