@inproceedings{inproceedings025cd80d,
title   = {Modelling of functionally graded piezoelectric ultrasonic transducers},
author = {Montealegre Rubio, Wilfredo and Buiochi, Flávio and Adamowski, Júlio Cezar and Silva, Emílio Carlos Nelli},
year = {2007},
publisher = {Vienna University of Technology},
booktitle   = {International Congress on Ultrasonics}
}