@article{article7a330acf,
title   = {Allanite and chevkinite in A-type granites and syenites of the Graciosa Province, southern Brazil},
author = {Vlach, Silvio Roberto Farias and Gualda, Guilherme Augusto Rosa},
year = {2007},
doi = {10.1016/j.lithos.2006.12.003},
journal   = {Lithos}
}