@article{article4d97ec3c,
title   = {Oxygen and carbon isotopes in the Barra do Itapirapuã and Mato Preto carbonatites (Southern Brazil)},
author = {Speziale, Sergio and Censi, Paolo and Comin-Chiaramonti, P. and Ruberti, Excelso and Gomes, Celso B.},
year = {1997},
journal   = {Mineralogica et Petrographica Acta}
}