@article{improvinghierarchicaladversarialrobustne,
  title = {Improving Hierarchical Adversarial Robustness of Deep Neural Networks},
  author = {Avery Ma and Aladin Virmaux and Kevin Scaman and Juwei Lu},
  year = {2021},
  eprint = {2102.09012},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2102.09012v1},
}