AAVV, A. CONVENGNI E CONGRESSI. Annals of Geophysics, [S. l.], v. 5, n. 4, p. 613–616, 1952. DOI: 10.4401/ag-5869. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/5869. Acesso em: 5 jul. 2022.