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To cite the paper that the R did package is based on:

Callaway B, Sant'Anna P (2021). “Difference-in-differences with multiple time periods.” Journal of Econometrics. https://doi.org/10.1016/j.jeconom.2020.12.001.

To cite the did R package:

Callaway B, Sant'Anna P (2021). “did: Difference in Differences.” R package version 2.1.2, https://bcallaway11.github.io/did/.

Corresponding BibTeX entries: 

  @Article{,
    title = {Difference-in-differences with multiple time periods},
    author = {Brantly Callaway and Pedro H.C. Sant'Anna},
    year = {2021},
    journal = {Journal of Econometrics},
    url = {https://doi.org/10.1016/j.jeconom.2020.12.001},
  }

  @Misc{,
    title = {did: Difference in Differences},
    author = {Brantly Callaway and Pedro H.C. Sant'Anna},
    year = {2021},
    note = {R package version 2.1.2},
    url = {https://bcallaway11.github.io/did/},
  }

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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