References
- Anderson , P. W. 1958 . Phys. Rev. , 109 : 1492
- Mott , N. F. 1974 . Metal-Insulator Transitions , London : Taylor & Francis Ltd . Chap. 1
- Mott , N. F. , Pepper , M. , Pollitt , S. , Wallis , R. H. and Adkins , C. J. 1975 . Proc. R. Soc. A , 345 : 169
- Thouless , D. 1977 . Midwinter Solid State Research Conference Laguna Beach, California