@Inproceedings{yanbe2007can,
  author = {Yanbe, Yusuke and Jatowt, Adam and Nakamura, Satoshi and Tanaka, Katsumi},
  title  = {Can social bookmarking enhance search in the web?},

  year   = {2007},
  number = {},
  url    = {http://portal.acm.org/citation.cfm?id=1255175.1255198},
  doi = {http://doi.acm.org/10.1145/1255175.1255198},
  const  = {\ text}
}
@Inproceedings{yanbe2007social,
  author = {Yanbe, Yusuke and Jatowt, Adam and Nakamura, Satoshi and Tanaka, Katsumi},
  title  = {Can social bookmarking enhance search in the web?},

  year   = {2007},
  number = {},
  url    = {http://portal.acm.org/citation.cfm?id=1255175.1255198},
  doi = {10.1145/1255175.1255198},
  const  = {\ text}
}
@Inproceedings{1255198,
  author = {Yanbe, Yusuke and Jatowt, Adam and Nakamura, Satoshi and Tanaka, Katsumi},
  title  = {Can social bookmarking enhance search in the web?},

  year   = {2007},
  number = {},
  url    = {http://portal.acm.org/citation.cfm?id=1255198},
  doi = {http://doi.acm.org/10.1145/1255175.1255198},
  const  = {\ text}
}