@article{Ric03,
  title = "Incentive P2P networks: a protocol to encourage information sharing and contribution",
  author = "Richard T.B. Ma, Sam C.M. Lee, John Chi Shing Lui, David K.Y. Yau",
  year = "2003",
  month = "sep",
  booktitle = "SIGMETRICS Performance Evaluation Review",
  volume = "31",
  number = "2",
  pages = "23-25",
}