References
- Lines , M. E. and Glass , A. M. 1977 . Principles and Applications of Ferroelectrics and Related Materials , Oxford : Clarendon .
- Born , M. and Huang , K. 1954 . Dynamical Theory of Crystal Lattices , Oxford : Clarendon .
- Kvyatkovskii , O. E. 1985 . Sov. Phys. Solid State , 27 : 1603
- Kvyatkovskii , O. E. Fiz. Tverd. Tela(Russ.) , 35 in press
- Sham , L. J. 1969 . Phys. Rev. , 188 : 1431
- Pick , R. M. , Cohen , M. H. and Martin , R. M. 1970 . Phys. Rev. B , 1 : 910
- Kvyatkovskii , O. E. 1986 . Soy. Phys. Solid State. , 28 : 548
- Kvyatkovskii , O. E. and Maksimov , G. E. 1988 . Sov. Phys. Usp. , 31 : 1
- Lucovsky , G. , Martin , R. M. and Burstein , E. 1973 . J. Nonmetals , 1 : 137
- Slater , J. C. 1950 . Phys. Rev. , 78 : 748