@article{QiuWirgesGerhard2011,
  author    = {Xunlin Qiu and Werner Wirges and Reimund Gerhard},
  title     = {Beneficial and detrimental fatigue effects of dielectric barrier discharges on the piezoelectricity of polypropylene ferroelectrets},
  journal   = {Journal of applied physics},
  volume    = {110},
  number    = {2},
  doi       = {10.1063/1.3610507},
  year      = {2011},
}