@article{article49a627bc,
title   = {Design of piezocomposite material and piezoelectric transducers using topology optimization: part I},
author = {Silva, Emílio Carlos Nelli and Fonseca, J. S. O. and Espinosa, F. M. and Crumm, A. T. and Brady, G. A. and Halloran, J. W.},
year = {1999},
doi = {10.1007/bf02818918},
journal   = {Archives of Computational Methods in Engineering}
}