@article{JMLR:v10:su09a,
  author  = {Xiaogang Su and Chih-Ling Tsai and Hansheng Wang and David M. Nickerson and Bogong Li},
  title   = {Subgroup Analysis via Recursive Partitioning},
  journal = {Journal of Machine Learning Research},
  year    = {2009},
  volume  = {10},
  number  = {5},
  pages   = {141--158},
  url     = {http://jmlr.org/papers/v10/su09a.html}
}