@Inproceedings{bai2011discovering,
  author = {Bai, Xiao and Cambazoglu, B. Barla and Junqueira, Flavio P.},
  title  = {Discovering URLs through user feedback},

  year   = {2011},
  number = {},
  url    = {http://doi.acm.org/10.1145/2063576.2063592},
  doi = {10.1145/2063576.2063592},
  const  = {\ text}
}
@Inproceedings{liu2011browsing,
  author = {Liu, Minghai and Cai, Rui and Zhang, Ming and Zhang, Lei},
  title  = {User browsing behavior-driven web crawling},

  year   = {2011},
  number = {},
  url    = {http://doi.acm.org/10.1145/2063576.2063593},
  doi = {10.1145/2063576.2063593},
  const  = {\ text}
}