@article{article7446fc29,
title   = {Piezoelectrets with well-defined cavities produced from 3D-printed acrylonitrile butadiene styrene structures},
author = {Assagra, Yuri Andrey Olivato and Altafim, Ruy Alberto Pisani and Altafim, Ruy Alberto Corrêa and Carmo, João Paulo Pereira do},
year = {2015},
doi = {10.1049/el.2015.2543},
journal   = {Electronics Letters}
}