@Other{kohavi2012online,
  author = {Kohavi, Ron},
  title  = {Online Controlled Experiments: Introduction, Learnings, and Humbling Statistics},

  year   = {2012},
  number = {},
  url    = {http://www.exp-platform.com/Pages/2012RecSys.aspx},

  const  = {\ text}
}
@Inproceedings{brew2010using,
  author = {Brew, Anthony and Greene, Derek and Cunningham, Pádraig},
  title  = {Using Crowdsourcing and Active Learning to Track Sentiment in Online Media},

  year   = {2010},
  number = {},
  url    = {http://dl.acm.org/citation.cfm?id=1860967.1860997},

  const  = {\ text}
}
@Inproceedings{ahn2007topological,
  author = {Ahn, Yong-Yeol and Han, Seungyeop and Kwak, Haewoon and Moon, Sue and Jeong, Hawoong},
  title  = {Analysis of topological characteristics of huge online social networking services},

  year   = {2007},
  number = {},
  url    = {http://portal.acm.org/citation.cfm?id=1242685},
  doi = {10.1145/1242572.1242685},
  const  = {\ text}
}