@article{astochasticsubgradientmethodfor,
  title = {A Stochastic Subgradient Method for Distributionally Robust Non-Convex Learning},
  author = {Mert Gürbüzbalaban and Andrzej Ruszczyński and Landi Zhu},
  year = {2020},
  eprint = {2006.04873},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2006.04873v3},
}