Activity levels of gamma-emitters in Brazil nuts. Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 4, n. 1, 2016. DOI: 10.15392/bjrs.v4i1.200. Disponível em: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/200. Acesso em: 2 may. 2025.