FESTA, C. SULLA ABBONDANZA ORIGINARIA DEL K40. Annals of Geophysics, [S. l.], v. 3, n. 4, p. 489–499, 1950. DOI: 10.4401/ag-6052. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/6052. Acesso em: 28 mar. 2024.