@inbook{Cheng2015,
author = {Cheng, J. and Teevan, J. and Bernstein, M.S.},
title= {Measuring crowdsourcing effort with error-time curves},
year = {2015},
doi = {10.1145/2702123.2702145},
booktitle = {Proceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems, Seoul, Korea, April 18–23, 2015},
address = {Seoul, Korea},
publisher = {ACM},
pages = {1365--1374},
}