@article{article95f201c4,
title   = {Zr- and Ba-rich minerals from the Ponte Nova alkaline mafic-ultramafic massif, Southeastern Brazil: indication of an enriched mantle source},
author = {Azzone, Rogério Guitarrari and Ruberti, Excelso and Enrich Rojas, Gaston Eduardo and Gomes, Celso B.},
year = {2009},
doi = {10.3749/canmin.47.5.1087},
journal   = {The Canadian Mineralogist}
}