@article{JMLR:v17:15-420,
  author  = {Lei Sun and Alexander G. Nikolaev},
  title   = {Mutual Information Based Matching for Causal Inference with Observational Data},
  journal = {Journal of Machine Learning Research},
  year    = {2016},
  volume  = {17},
  number  = {199},
  pages   = {1--31},
  url     = {http://jmlr.org/papers/v17/15-420.html}
}