@article{differenceindifferenceswithcompositional,
  title = {Difference-in-Differences with Compositional Changes},
  author = {Pedro H. C. Sant'Anna and Qi Xu},
  year = {2023},
  eprint = {2304.13925},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2304.13925v2},
}