@article{<a href="http://dblp.uni-trier.de/db/about/bibtex.html">DBLP</a>:journals/pvldb/LiuLOSWZ12,
  author    = {Xuan Liu and
               Meiyu Lu and
               Beng Chin Ooi and
               Yanyan Shen and
               Sai Wu and
               Meihui Zhang},
  title     = {CDAS: A Crowdsourcing Data Analytics System},
  journal   = {PVLDB},
  volume    = {5},
  number    = {10},
  year      = {2012},
  pages     = {1040-1051},
  ee        = {http://vldb.org/pvldb/vol5/p1040_xuanliu_vldb2012.pdf},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}