Baria, Rogerio. “Thorium, Uranium and Potassium Levels in Brazilian Geological Sediment As Determined by Gamma-Ray Spectroscopy and Instrumental Neutron Activation Analysis”. Brazilian Journal of Radiation Sciences 10, no. 3B (Suppl.) (December 4, 2022). Accessed December 26, 2024. https://bjrs.org.br/revista_33014/index.php/REVISTA/article/view/1984.