Natural radionuclide and 137Cs activity concentration in soils of the Brazilian State of Sergipe and their correlation with environmental characteristics. Braz. J. Rad. Sci. [Internet]. 2024 Sep. 30 [cited 2025 May 2];12(3):e2525. Available from: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/2525