@article{estimatingcounterfactualmatrixmeanswith,
  title = {Estimating Counterfactual Matrix Means with Short Panel Data},
  author = {Lihua Lei and Brad Ross},
  year = {2023},
  eprint = {2312.07520},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2312.07520v2},
}