@article{article1308139e,
title   = {Effects of nonlinearities in power ultrasonic transducers using time reversal focalization},
author = {Perez, Nicolas and Franceschetti, Nilson Noris and Adamowski, Júlio Cezar},
year = {2009},
doi = {10.1016/j.phpro.2010.01.023},
journal   = {Physics Procedia}
}