@article{GerhardKuenstlerGoerneetal.2000,
  author    = {Reimund Gerhard and Wolfgang K{\"u}nstler and Thomas G{\"o}rne and Andreas Pucher and Till Weinhold and Martin Seiß and Zhongfu Xia and Armin Wedel and Rudi Danz},
  title     = {Porous polytetrafluoroethylene space-charge electrets for piezoelectrical applications},
  year      = {2000},
}