References
- Silverman , B. D. 1963 . Phys. Rev. , 131 : 2478
- Barsch , G. R. , Achar , B. N. N. and Cross , L. E. 1981 . Proceedings of the Fifth International Meeting on Ferroelectricity, The Pennsylvania State University . August 1981 . pp. 187 These Proceedings
- Barsch , G. R. , Achar , B. N. N. and Cross , L. E. 1981 . Proceedings of the Fifth International Meeting on Ferroelectricity, The Pennsylvania State University . August 1981 . pp. 191 These Proceedings
- Maradudin , A. A. and Fein , A. E. 1962 . Phys. Rev. , 128 : 2589
- Cowley , R. A. 1963 . Adv. Phys. , 12 : 421
- Bruce , A. D. and Cowley , R. A. 1973 . J. Phys. C , 6 : 2422
- Achar , B. N. N. , Barsch , G. R. and Cross , L. E. 1981 . Phys. Rev. , B24 : 1209
- 1981 . Proceedings of the Fifth International Meeting on Ferroelectricity, The Pennsylvania State University . August 1981 . pp. 495 These Proceedings
- Migoni , R. , Bilz , H. and Bäuerle , D. 1976 . Phys. Rev. Lett. , 37 : 1155
- Balkanski , M. , ed. 1978 . Lattice Dynamics , 650 Paris : Flammarion .
- Yamada , Y. and Shirane , G. 1969 . J. Phys. Soc. Japan , 26 : 396
- Barker , A. S. 1966 . Phys. Rev. , 145 : 391
- Samara , G. A. 1966 . Phys. Rev. , 151 : 378
- 1971 . Ferroelectrics , 2 : 177