1. Glossary of Mineral Species;Fleischer,1995
2. Uranium migration and retention during weathering of a granitic waste rock pile
3. Uranium: Mineralogy, Geochemistry and the Environment;Burns,1999
4. Systematics, Paragenesis of U minerals;Finch,1999
5. Jazigos portugueses de minérios de urânio e sua génese;Cotelo Neiva,2003