1. Esboço estratigráfico do Pré-Cambriano da regiäo do Gurupi, Estado do Pará e Maranhäo. XXXI Cong;Abreu;Bras. Geol. Anais, Cambori'u (SC),1980
2. Grundzüge der Stratigraphie und Struktur des Irumiden Orogens;Ackermann,1960
3. Brazilian Structural Provinces: an Introduction;Almeida,1981
4. The evolution of the early Precambrian crust of southern Africa;Anhaeusser;Philos. Trans. R. Soc. London, Ser., A.,1973
5. Precambrian tectonic environments;Anhaeusser;Annu. Rev. Earth Planet. Sci.,1975