SJOSTRAND, H.; PRESCOTT, J. R. Thick source alpha counting: the measurement of thorium. Ancient TL, [S. l.], v. 20, n. 1, p. 7–10, 2002. DOI: 10.26034/la.atl.2002.339. Disponível em: https://www.ancienttl.org/article/view/6603. Acesso em: 2 may. 2025.