1. Bazot, G., Bousteyak, L., Hottin, G., Razafiniparany, A. (1971) Carte du metamorphisme de Madagascar. Doc. Bur. Geol. No. 183, Antananarivo, 24 p
2. Besairie, H. (1964) Carte geologique de Madagascar. Service Geologique de Madagascar, Antananarivo, 1:1, 000, 000 (colour), 3 sheets
3. The Precambrian of Madagascar;Besairie,1967
4. The Precambrian of Madagascar through whole rock Rb/Sr isochron data. In Histoire de Gondwana vue de Madagascar;Caen-Vachette;Antananarivo,1979
5. Geochronology, and provenance of the Itremo Group, Central Madagascar;Cox,1997