@article{GerhardWegenerKuenstleretal.2000,
  author    = {Reimund Gerhard and Michael Wegener and Wolfgang K{\"u}nstler and Werner Wirges and Thomas G{\"o}rne and D. Urayama and Dieter Neher},
  title     = {Inverse piezoelectricity of porous PTFE films with bipolar space charge},
  year      = {2000},
}