?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Tran-Thanh%2C+Long&rft.aulast=Tran-Thanh&rft.aufirst=Long&rft.date=2013&rft.title=Efficient+budget+allocation+with+accuracy+guarantees+for+crowdsourcing+classification+tasks&rft.genre=proceeding