@article{raysaraysearchingmethodforhardlabel,
  title = {RayS: A Ray Searching Method for Hard-label Adversarial Attack},
  author = {Jinghui Chen and Quanquan Gu},
  year = {2020},
  eprint = {2006.12792},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2006.12792v2},
}