@article{econometricanalysisofpotentialoutcomes,
  title = {When do common time series estimands have nonparametric causal meaning?},
  author = {Ashesh Rambachan and Neil Shephard},
  year = {2019},
  eprint = {1903.01637},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1903.01637v4},
}