References
- Clark , C. B. 1958 . Phys. Rev. , 109 : 1133
- Mott , N. F. 1974 . Metal-Insulator Transitions 154 London : Taylor & Francis Ltd . (), §4.10, p.
- Platzman , P. and Wolff , P. A. 1973 . Waves and Interactions in Solid State Plasmas (Academic Press), reviews the subject.
- Wigner , E. 1938 . Trans. Faraday Soc. , 34 : 678