@article{imai:kim:wang:23,
  author = {Imai, Kosuke and In Song Kim and Erik Wang},
  title = 	 {Matching Methods for Causal Inference with Time-Series Cross-Section Data},
  journal =      {American Journal of Political Science},
  year = 	 {2023},
  volume = 	 {67},
  number = 	 {3},
  pages =        {587--605}
}