Maximum recommended and allowable Radon-222 limits in water and air: Systematic review. Research, Society and Development, [S. l.], v. 11, n. 15, p. e144111536761, 2022. DOI: 10.33448/rsd-v11i15.36761. Disponível em: https://rsdjournal.org/rsd/article/view/36761. Acesso em: 5 dec. 2025.