@article{econhot_econhot-cited-cb9bda8255a7a4a5,
  title = {Instrumental Variables and the Search for Identification: From Supply and Demand to Natural Experiments},
  author = {Joshua D. Angrist and Alan B Krueger},
  journal = {The Journal of Economic Perspectives},
  year = {2001},
  volume = {15},
  number = {4},
  pages = {69-85},
  doi = {10.1257/jep.15.4.69},
  url = {https://doi.org/10.1257/jep.15.4.69}
}