References
- Jingde , Li . 1985 . Chinese Phys. Lett. , 2 ( 10 ) : 465
- Jingde , Li . 1984 . Ferroelectrics Lett. , 2 ( 2 ) : 59
- Huckel , E. 1931 . Z. Physik , 70 : 204
- 1931 . 72 : 310
- 1932 . 76 : 628
- Kellermann , E. W. 1940 . Phil. Trans. Roy. Soc. , 238 : 513
- 1941 . Proc. Roy. Soc. , A 178 ( 17 )
- Rayleigh , L. 1885 . Proc. Math. Soc. London , 17 : 4
- Born , M. and Huang , K. 1954 . Dynamical Theory of Crystal Lattices
- Fermi , E. , Pasta , J. and Ulam , S. 1965 . Collected Papers of Enrico Fermi , Vol. 2 , 978 University of Chicago Press .