@article{approvalvotingandincentivesin,
  title = {Approval Voting and Incentives in Crowdsourcing},
  author = {Nihar B. Shah and Dengyong Zhou and Yuval Peres},
  year = {2015},
  eprint = {1502.05696},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1502.05696v3},
}