1. Smith, W. A. 1989.Ultrasonics Symposium, 755New York: IEEE.
2. Smith, W. A., Shaulov, A. and Auld, B. A. 1989.Ultrasonics Symposium, 642New York: IEEE.
3. Connectivity and piezoelectric-pyroelectric composites
4. Gururaja, T. R., Safari, A., Newnham, R. E. and Cross, L. E. 1987.Electronic Ceramics, Edited by: Levinson, L. M. 92–128. New York: Marcel Dekker.