@article{regularizingtowardscausalinvariancelinea,
  title = {Regularizing towards Causal Invariance: Linear Models with Proxies},
  author = {Michael Oberst and Nikolaj Thams and Jonas Peters and David Sontag},
  year = {2021},
  eprint = {2103.02477},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2103.02477v2},
}