@article{imai:kim:21,
  author =   {Imai, Kosuke and Kim, In Song},
  title =    {On the Use of Two-way Fixed Effects Regression Models for Causal Inference with Panel Data},
  journal =  {Political Analysis},
  year =     {2021},
  page =     {405-415},
  vol =      {29},
  number =   {3}
}