@article{recursivepartitioningforheterogeneous,
  title = {Recursive Partitioning for Heterogeneous Causal Effects},
  author = {Susan Athey and Guido Imbens},
  year = {2015},
  eprint = {1504.01132},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1504.01132v3},
}