1. Fridkin, V.M., Segnetoelektriki-poluprovodniki (Ferroelectrics-Semiconductors), Moscow: Nauka, 1976.
2. Lee, J., Esayan, S., Safari, A., and Ramesh, R., Integr. Ferroelectr., 1995, vol. 6, nos. 1–4, p. 289.
3. Dubovik, E., Fridkin, V., and Dimos, D., Integr. Ferroelectr., 1995, vol. 9, p. 285.
4. Yarmarkin, V.K., Gol’tsman, B.M., Kazanin, M.M., and Lemanov, V.V., Fiz. Tverd. Tela, 2000, vol. 42, p. 511.
5. Yang, Y.S., Lee, S.J., and Yi, S., Appl. Phys. Lett., 2000, vol. 76, p. 774.