“Levels of Thorium, Uranium and Potassium in Brazilian Geological Sediment Determined by Gamma-Ray Spec-Troscopy and Instrumental Neutron Activation Analysis”. Brazilian Journal of Radiation Sciences 10, no. 3B (Suppl.) (janeiro 4, 2023). Acesso em julho 18, 2025. https://bjrs.org.br/revista/index.php/REVISTA/article/view/1984.