FESTA, C.; SANTANGELO, M. SUL DECADIMENTO DEL K40. Annals of Geophysics, [S. l.], v. 3, n. 1, p. 95–101, 1950. DOI: 10.4401/ag-6016. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/6016. Acesso em: 28 oct. 2021.