@article{whencovariateshifteddataaugmentation,
  title = {When Covariate-shifted Data Augmentation Increases Test Error And How to Fix It},
  author = {Sang Michael Xie* and Aditi Raghunathan* and Fanny Yang and John C. Duchi and Percy Liang},
  year = {2019},
  url = {https://openreview.net/forum?id=ByxduJBtPB},
}