@article{articleaa460744, title = {Novel method for electret production using impulse voltages}, author = {Altafim, Ruy Alberto CorrĂȘa and Giacometti, JosĂ© Alberto and Janiszewski, Jorge Mieczyslaw}, year = {1992}, doi = {10.1109/14.155790}, journal = {Ieee Transactions on Electrical Insulation} }