1. Emeralds from Itabira Minas Gerais, Brazil;Bastos;Lapidary J.,1981
2. Distribution of tantalum and niobium in muscovite from granitic pegmatites;Beus;Geokhimiya,1966
3. A evolução geocronológica da cordilheira do Espinhaço: Dados novos e integração;Brito Neves;Rev. Bras. Geoc.,1979
4. Rare-element granitic pegmatites. Part I: anatomy and internal evolution of pegmatite deposits;Černý;Geosci. Can.,1991
5. Rare-element granitic pegmatites. Part II: regional to global environments and petrogenesis;Černý;Geosci. Can.,1991