1. Sayer, M.(1986) Proc. 6th IEEEInt.Symp.Appl.Ferroelect, IEEE, Piscataway,pp 560.
2. Ichinose, N., Hirao,Y., Nakamoto, N. and Yamashita, T. (1985), Jap. J. Appl. Phys. 23, Suppl. 24–2, 463.
3. Land, C.E., Butler, M.A. and Martin, SJ. (1989), IEEE-IEDM,251.
4. Swartz, R.G. and Plummer, J.D. (1979), IEEE Trans. Electron. Devices, ED-
26, 1921.
5. Hickernell, F.S. (1985), IEEE Trans. Sonics and Ultrason. SU 32, 634.