@InProceedings{gao-xu-callisonburch:2015:NAACL-HLT,
  author    = {Gao, Mingkun  and  Xu, Wei  and  Callison-Burch, Chris},
  title     = {Cost Optimization in Crowdsourcing Translation: Low cost translations made even cheaper},
  booktitle = {Proceedings of the 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies},
  month     = {May--June},
  year      = {2015},
  address   = {Denver, Colorado},
  publisher = {Association for Computational Linguistics},
  pages     = {705--713},
  url       = {http://www.aclweb.org/anthology/N15-1072}
}