Conceição, F. T., D. M. Bonotto, J. R. Jimenez-Rueda, E. G. Oliveira, L. H. Mancini, C. R. Duarte, and R. B. Navarro. 2012. “RADIONUCLIDES AND OTHER ELEMENTS DISTRIBUTION IN THE CATALÃO I PHOSPHATE ORE ROCKS, BRAZIL, AND THEIR INDUSTRIAL (BY) PRODUCTS”. Geochimica Brasiliensis 23 (2). https://geobrasiliensis.org.br/geobrasiliensis/article/view/309.