TY - JOUR A1 - Wegener, Michael A1 - Bergweiler, Steffen A1 - Wirges, Werner A1 - Pucher, Andreas A1 - Gerhard, Reimund T1 - Voided space-charge electrets : piezoelectric transducer materials for electro-acoustic applications Y1 - 2004 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/14438 ER -