@inproceedings{PZ14,
  author        = {J. Pang and Y. Zhang},
  title         = {A new access control scheme for {F}acebook-style social networks},
  booktitle     = {Proc.\ 9th Conference on Availability, Reliability and Security (ARES'14)},
  publisher     = {IEEE Computer Society},
  year          = {2014},
  pages         = {1-10}
}