@article{perfectbiddercollusionthroughbribeand,
  title = {Perfect bidder collusion through bribe and request},
  author = {Jingfeng Lu and Zongwei Lu and Christian Riis},
  year = {2019},
  eprint = {1912.03607},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1912.03607v2},
}