@article{EllingPinnowDanzetal.2001,
  author    = {Elling, B. and Pinnow, M. and Danz, Rudi and Wegener, Michael and Wirges, werner and Gerhard, Reimund},
  title     = {Coating of porous polytetrafluoroethylene films with other polymers for electret applications},
  isbn      = {0-7803-7053-8},
  year      = {2001},
  language  = {en}
}
@article{MellingerWegenerWirgesetal.2001,
  author    = {Mellinger, Axel and Wegener, Michael and Wirges, Werner and Gerhard, Reimund},
  title     = {Thermally stable dynamic piezoelectricity in sandwich films of porous and non-porous amorphous fluoropolymer},
  year      = {2001},
  language  = {en}
}
@article{PaajanenWegenerGerhard2001,
  author    = {Paajanen, Mika and Wegener, Michael and Gerhard, Reimund},
  title     = {Charging of cellular space-charge electret films in various gas atmospheres},
  isbn      = {0-7803-7053-8},
  year      = {2001},
  language  = {en}
}
@article{PaajanenWegenerGerhard2001,
  author    = {Paajanen, Mika and Wegener, Michael and Gerhard, Reimund},
  title     = {Understanding the role of the gas in the voids during corona charging of cellular electret films : a way to enhance their piezoelectricity},
  year      = {2001},
  language  = {en}
}
@article{WegenerSeissGerhard2001,
  author    = {Wegener, Michael and Seiß, Martin and Gerhard, Reimund},
  title     = {Prepariation and assessment of piezo- and pyroelectric poly- (vinylidene fluoride-hexafluoropropylene) copolymer films},
  year      = {2001},
  language  = {en}
}
@article{WegenerWirgesRichteretal.2001,
  author    = {Wegener, Michael and Wirges, Werner and Richter, Kristin and K{\"u}nstler, Wolfgang and Gerhard, Reimund},
  title     = {Charge stability and piezoelectric properties of porous fluoro-polymer space-charge electrets in layer systems},
  year      = {2001},
  language  = {en}
}