@article{econhot_econhot-cited-a4f8b4c2c45daf52,
  title = {Training, Wages, and Sample Selection: Estimating Sharp Bounds on Treatment Effects},
  author = {David S. Lee},
  journal = {The Review of Economic Studies},
  year = {2009},
  volume = {76},
  number = {3},
  pages = {1071-1102},
  doi = {10.1111/j.1467-937x.2009.00536.x},
  url = {https://doi.org/10.1111/j.1467-937x.2009.00536.x}
}