@article{JMLR:v15:colombo14a,
  author  = {Diego Colombo and Marloes H. Maathuis},
  title   = {Order-Independent Constraint-Based Causal Structure Learning},
  journal = {Journal of Machine Learning Research},
  year    = {2014},
  volume  = {15},
  number  = {116},
  pages   = {3921--3962},
  url     = {http://jmlr.org/papers/v15/colombo14a.html}
}