1. 1M. Kahn, R. W. Rice, and D. Shadwell , "Preparation and Piezoelectric Response of PZT Ceramics with Anisotropic Pores"; to be published inAm. Cerum. Soc. Bull..
2. 2A. A. H. Amin , Phenomological and Structural Studies of PbZr03,PbTiO3, Piezoceramics, " pp.26 , 33 ; Ph.D. Thesis. Pennsylvania State University, Nov.1979 .
3. 4H. Kolsky , Stress Waves in Solids ; p.9 . Dover Publications, 1963 .
4. Measurement of Poisson's Ratio in Poled Ferroelectric Ceramics