1. A.J. Freeman and D.D. Koelling, in: The Actinides: Electronic Structure and Related Properties, vol. I, A.J. Freeman and J.B. Darby, eds. (Academic Press, New York and London), p. 51.
2. Influence of unoccupied5f-band states on the Fermi surface of Th metal
3. Electrons at the Fermi Surface;Mackintosh,1979
4. Calculated Bulk Properties of the Actinide Metals
5. 5f-electron Delocalization in Americium