@inproceedings{DBLP:conf/sigmod/FranklinKKRX11,
  author    = {Michael J. Franklin and
               Donald Kossmann and
               Tim Kraska and
               Sukriti Ramesh and
               Reynold Xin},
  title     = {CrowdDB: answering queries with crowdsourcing},
  booktitle = {SIGMOD Conference},
  year      = {2011},
  pages     = {61-72},
  ee        = {http://doi.acm.org/10.1145/1989323.1989331},
  crossref  = {DBLP:conf/sigmod/2011},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/sigmod/2011,
  editor    = {Timos K. Sellis and
               Ren{\'e}e J. Miller and
               Anastasios Kementsietsidis and
               Yannis Velegrakis},
  title     = {Proceedings of the ACM SIGMOD International Conference on
               Management of Data, SIGMOD 2011, Athens, Greece, June 12-16,
               2011},
  booktitle = {SIGMOD Conference},
  publisher = {ACM},
  year      = {2011},
  isbn      = {978-1-4503-0661-4},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}