@article{article94632adb,
title   = {A novel method for electret production using impulse voltages},
author = {Altafim, Ruy Alberto Corrêa and Giacometti, José Alberto and Janiszewski, Jorge Mieczyslaw},
year = {1992},
doi = {10.1109/14.155790},
journal   = {Ieee Transactions on Electrical Insulation}
}