Sial, A. N. 2011. “THE TERTIARY ALKALlNE PROVINCE OF FORTALEZA, STATE OF CEARÁ, BRAZIL: OXYGEN ISOTOPES ANO REE-GEOCHEMISTRY”. Geochimica Brasiliensis 1 (1):41-51. https://geobrasiliensis.emnuvens.com.br/geobrasiliensis/article/view/2.