@inproceedings {4905,
	title = {Overview of the TREC 2013 Crowdsourcing Track},
	booktitle = {Text Retrieval Conference (TREC)},
	year = {2013},
	url = {http://trec.nist.gov/pubs/trec22/papers/CROWD.OVERVIEW.pdf},
	author = {Mark Smucker and Gabriella Kazai and Matthew Lease}
}
