@article{SunZhangXiaetal.2011,
  author    = {Zhuanlan Sun and Xiaoqing Zhang and Zhongfu Xia and Xunlin Qiu and Werner Wirges and Reimund Gerhard and Changchun Zeng and Chuck Zhang and Ben Wang},
  title     = {Polarization and piezoelectricity in polymer films with artificial void structure},
  journal   = {Applied physics : A, Materials science \& processing},
  volume    = {105},
  number    = {1},
  pages     = {197 -- 205},
  doi       = {10.1007/s00339-011-6481-2},
  year      = {2011},
}