@inproceedings{AKKLNVec07,
  author    = {Esteban Arcaute and
               Adam Kirsch and
               Ravi Kumar and
               David Liben-Nowell and
               Sergei Vassilvitskii},
  title     = {On threshold behavior in query incentive networks},
  booktitle = {ACM Conference on Electronic Commerce},
  year      = {2007},
  pages     = {66-74}
}

@proceedings{EC2007,
  editor    = {Jeffrey K. MacKie-Mason and
               David C. Parkes and
               Paul Resnick},
  title     = {Proceedings 8th ACM Conference on Electronic Commerce (EC-2007),
               San Diego, California, USA, June 11-15, 2007},
  booktitle = {ACM Conference on Electronic Commerce},
  publisher = {ACM},
  year      = {2007},
  isbn      = {978-1-59593-653-0}
}