@article{JMLR:v18:17-563,
  author  = {Santtu Tikka and Juha Karvanen},
  title   = {Enhancing Identification of Causal Effects by Pruning},
  journal = {Journal of Machine Learning Research},
  year    = {2018},
  volume  = {18},
  number  = {194},
  pages   = {1--23},
  url     = {http://jmlr.org/papers/v18/17-563.html}
}