@article{articled8a20362,
title   = {Design of piezoelectric multi-actuated microtools using topology optimization},
author = {Silva, Emílio Carlos Nelli and Silva, Emílio Carlos Nelli and Nishiwaki, Shinji},
year = {2005},
doi = {10.1088/0964-1726/14/6/036},
journal   = {Smart Materials Structures}
}