1. There are numerous reviews of surface science techniques. A current one is The Structure of Surfaces (M.A. Van Hove and S.Y. Tong, eds.). Berlin: Springer-Verlag, 1985.
2. Anderson, A.B., Parr, R.G., Theoret. Chim. Acta
26: 301 (1972).
3. Anderson, A.B., J. Chem. Phys. 57: 4143 (1972).
4. Anderson, A.B., Phys. Rev. B
8: 3824 (1973).
5. Anderson, A.B., J. Chem. Phys. 60: 2477 (1974).