@conference{RiC04a,
  title = "An Incentive Mechanism for P2P Networks",
  author = "Richard T.B. Ma, Sam C.M. Lee, John Chi Shing Lui, David K.Y. Yau",
  year = "2004",
  month = "mar",
  booktitle = "The 24th International Conference on Distributed Computing Systems (ICDCS 04)",
  pages = "516-523",
}