@article{treatmenteffectsininteractivefixed,
  title = {Treatment Effects in Interactive Fixed Effects Models with a Small Number of Time Periods},
  author = {Brantly Callaway and Sonia Karami},
  year = {2020},
  eprint = {2006.15780},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2006.15780v3},
}