1. The Chemistry of the Actinide and Transactinide Elements;Edelstein,2006
2. Crystallographic Databases;Bergerhoff,1987
3. Crystal structure of americium sulfate octahydrate
4. Structural Chemistry of Inorganic Actinide Compounds;Sykora,2007
5. R.W. Stoughton, R.B. Duffield (1958) US 2856261 19581014.