@article{ao2021multivalued,
  author = {Ao, Wallice and Calonico, Sebastian and Lee, Ying-Ying},
  title = {Multivalued Treatments and Decomposition Analysis: An Application to the WIA Program},
  journal = {Journal of Business and Economic Statistics},
  year = {2021},
  volume = {39},
  number = {1},
  pages = {358--371},
  doi = {10.1080/07350015.2019.1660664}
}