G., M. Studio geofisico della colata leucititica a Civita Castellana. Annals of Geophysics, [S. l.], v. 20, n. 2, p. 171–182, 1967. DOI: 10.4401/ag-4990. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4990. Acesso em: 16 oct. 2021.