@article{abtreeanalgorithmforsubgroupbased,
  title = {ABtree: An Algorithm for Subgroup-Based Treatment Assignment},
  author = {Derek Feng and Xiaofei Wang},
  year = {2016},
  eprint = {1605.04262},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1605.04262v1},
}