@article{capturethebotusingadversarialexamplesto,
  title = {Capture the Bot: Using Adversarial Examples to Improve CAPTCHA Robustness to Bot Attacks},
  author = {Dorjan Hitaj and Briland Hitaj and Sushil Jajodia and Luigi V. Mancini},
  year = {2020},
  eprint = {2010.16204},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2010.16204v2},
}