Radioactive Background of Granito Madeira, North Amazonas, Brazil. Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 7, n. 2A (Suppl.), 2019. DOI: 10.15392/bjrs.v7i2A.600. Disponível em: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/600. Acesso em: 24 may. 2025.