
A bibliography is given containing 1527 references published during 2003 and 2004 on piezoelectric and pyroelectric properties of materials and their applications. It contains listings of journal articles and patents with complete bibliographic citations. The year 2003 references complete the 2003 references in Guides 23 and 24 (published previously in this series). Journal and patent references from 2004 in which the first author's name begins with letters between A and K are given in the current guide. Journal articles and patents by authors with names beginning with the letters L through Z will be published in Guide 26. This bibliography is the continuation of a series published semi-annually.