Hydrogeochemical behavior of uranium and thorium in rock and groundwater samples from southeastern of El Bajío Guanajuatese, Guanajuato, Mexico. - Morales-Arredondo, J. I.; Hernández, M. A. Armienta; Hernández-Mendiola, E.; Estrada-Hernández, R. E.; Bermea, O. Morton (Environmental Earth Sciences, 2018)