Publisher
Springer International Publishing
Reference23 articles.
1. J. Zak, Phys. Rev. 134, A1602–A1607 (1964)
2. E. Brown, Phys. Rev. 133, A1038 (1964)
3. L.D. Landau, E M. Lifshitz, Statistical Physics, vol 9, part 2, sect. 60 (Pergamon Press Ltd., Headington, 1980)
4. D.R. Hofstadter, Phys. Rev. B 14, 2239 (1976)
5. D.K. Ferry, Prog. Quant. Electr. 16, 251 (1992)