Figueiredo, A. M. G., & Marques, L. S. (2011). DETERMINATION OF RARE EARTHS AND OTHER TRACE ELEMENTS IN THE BRAZlLIAN GEOLOGICAL STANDARDS BB-1 AND GB-1 BV NEUTRON ACTIVATION ANALYSIS. Geochimica Brasiliensis, 3(1), 1–8. Retrieved from https://geobrasiliensis.emnuvens.com.br/geobrasiliensis/article/view/19