@article{econhot_econhot-cited-351643a541bf8eba,
  title = {Difference-in-differences with variation in treatment timing},
  author = {Andrew Goodman-Bacon},
  journal = {Journal of Econometrics},
  year = {2021},
  volume = {225},
  number = {2},
  pages = {254-277},
  doi = {10.1016/j.jeconom.2021.03.014},
  url = {https://doi.org/10.1016/j.jeconom.2021.03.014}
}