TY - JOUR A1 - Elling, B. A1 - Pinnow, M. A1 - Danz, Rudi A1 - Wegener, Michael A1 - Wirges, werner A1 - Gerhard, Reimund T1 - Coating of porous polytetrafluoroethylene films with other polymers for electret applications Y1 - 2001 SN - 0-7803-7053-8 ER - TY - JOUR A1 - Gerhard, Reimund A1 - Künstler, Wolfgang A1 - Görne, Thomas A1 - Pucher, Andreas A1 - Weinhold, Till A1 - Seiß, Martin A1 - Xia, Zhongfu A1 - Wedel, Armin A1 - Danz, Rudi T1 - Porous polytetrafluoroethylene space-charge electrets for piezoelectrical applications Y1 - 2000 ER - TY - JOUR A1 - Xia, Zhongfu A1 - Gerhard, Reimund A1 - Künstler, Wolfgang A1 - Wedel, Armin A1 - Danz, Rudi T1 - High surface-charge stability of porous polytetrafluoroethylene electret films at room and elvated temperatures Y1 - 1999 ER -