AAVV, A. CONVENGNI E CONGRESSI. Annals of Geophysics, [S. l.], v. 2, n. 4, p. 607–609, 1949. DOI: 10.4401/ag-5988. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/5988. Acesso em: 5 jul. 2022.