@article{articleda2a6fd9,
title   = {Analysis of the modeling of echo responses from circular concavity defects using impulse and discrete representation methods},
author = {Formigoni, Paulo Orestes and Adamowski, Júlio Cezar and Buiochi, Flávio},
year = {2010},
doi = {10.1016/j.phpro.2010.01.109},
journal   = {Physics Procedia}
}