@article{1345,
  author = {Xiaohui Liang and Rongxing Lu and Le Chen and Xiaodong Lin and Xuemin Shen},
  title = {PEC: A privacy-preserving emergency call scheme for mobile healthcare social networks},
  year = {2011},
  journal = {Journal of Communications and Networks},
  volume = {13},
  number = {2},
  pages = {102-112},
  publisher = {IEEE},
}