@article{predcoindefenseagainstquerybasedhard,
  title = {PredCoin: Defense against Query-based Hard-label Attack},
  author = {Junfeng Guo and Yaswanth Yadlapalli and Thiele Lothar and Ang Li and Cong Liu},
  year = {2021},
  eprint = {2102.02923},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2102.02923v1},
}