CALOI, P. Caratteristiche della crosta terrestre dalle Alpi agli Appennini. Annals of Geophysics, [S. l.], v. 10, n. 3-4, p. 189–192, 1957. DOI: 10.4401/ag-5906. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/5906. Acesso em: 21 may. 2022.