1. Jaffe, B., Cook Jr., W.R., Jaffe, H.: Piezoelectric Ceramics. Academic Press, New York (1971)
2. Takahashi, T.: Am. Ceram. Soc. Bull. 69, 691 (1990)
3. Lines, M.E., Glass, A.M.: Principles and Applications of Ferroelectric and Related Materials. Oxford University Press, Oxford (1979)
4. Udomporn, A., Ananta, S.: J. Mater. Lett. 58, 1154 (2004)
5. Forrester, J.S., Zobec, J.S., Phelan, D., Kisi, E.H.: J. Solid State Chem. 177(10), 3553 (2004)