1. B. JAFFE, W. R. COOK and H. JAFFE, Piezoelectric Ceramics. Academic Press, New York (1971) 148.
2. G. H. HAERTLING, Ceramics Materials for Electronics: Processing, properties and Application, edited by, R. C. Buchanan, Dekker, New York (1986) 139.
3. W. KANZIG, Ferroelectrics and Antiferroelectric. Academic Press, New York (1957) 130.
4. A. MANSINGH, Ferroelectrics
102 (1990) 69.
5. M. SAYER and K. SREENIVES, Ceramic Thin Films: Fabrication and application, Science (Washington, DC). 247 (1990) 1056.