1. Cohesive properties of Uranium Dioxide
    P.J. Kelly and M.S.S. Brooks,
    Physica B+C 102B, 81-83 (1980).
  2. Cohesive properties of CaF2 and UO2 in the atomic sphere approximation
    P.J. Kelly and M.S.S. Brooks,
    J. Phys. C 13, L939-945 (1980).