MEDI, E. Campo magnetico solare e correnti telluriche. Annals of Geophysics, [S. l.], v. 1, n. 4, p. 568–569, 1948. DOI: 10.4401/ag-6086. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/6086. Acesso em: 9 dec. 2021.