Indoor radon assessment in kindergartens: towards a national action plan. Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 9, n. 2, 2021. DOI: 10.15392/bjrs.v9i2.1234. Disponível em: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/1234. Acesso em: 3 may. 2025.