@article{ZhongFuShanShanJiaQianetal.2003,
  author    = {X. Zhong-Fu and M. Shan-Shan and Z. Jia-Qian and Q. Xun-Lin and Z. Ye-Wen and Reimund Gerhard and Wolfgang K{\"u}nstler},
  title     = {Piezoelectric activity and its stability of polytetrafluoroethylene (PTFE) films},
  year      = {2003},
}