Studies on rare earths in uranium mining waste rocks using neutron activation analysis - Fernandes, Elisabete A. De Nadai; Bacchi, Marcio Arruda; Sarríes, Gabriel Adrián; Santos, L. G. C; Boscaro, Mateus Eugenio; Wiikmann, Luiza Oide; Bode, Peter (International Nuclear Chemistry Congress, 2014)