@article{sdid,
Author = {Arkhangelsky, Dmitry and Athey, Susan and Hirshberg, David A. and Imbens, Guido W. and Wager, Stefan},
Title = {Synthetic Difference-in-Differences},
Journal = {American Economic Review},
Volume = {111},
Number = {12},
Year = {2021},
Month = {December},
Pages = {4088-4118},
DOI = {10.1257/aer.20190159},
URL = {https://www.aeaweb.org/articles?id=10.1257/aer.20190159}}



@misc{snn,
      title={Causal Matrix Completion},
      author={Anish Agarwal and Munther Dahleh and Devavrat Shah and Dennis Shen},
      year={2021},
      eprint={2109.15154},
      archivePrefix={arXiv},
      primaryClass={econ.EM}
}