@article{identificationofthemarginaltreatment,
  title = {Treatment Effects with Multidimensional Unobserved Heterogeneity: Identification of the Marginal Treatment Effect},
  author = {Toshiki Tsuda},
  year = {2022},
  eprint = {2209.11444},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2209.11444v5},
}