@article{WangXR12,
  author    = {Qian Wang and
               Kaihe Xu and
               Kui Ren},
  title     = {Cooperative Secret Key Generation from Phase Estimation in Narrowband
               Fading Channels},
  journal   = {{IEEE} Journal on Selected Areas in Communications},
  volume    = {30},
  number    = {9},
  pages     = {1666--1674},
  year      = {2012}
}