@article{JMLR:v13:tsamardinos12a,
  author  = {Ioannis Tsamardinos and Sofia Triantafillou and Vincenzo Lagani},
  title   = {Towards Integrative Causal Analysis of Heterogeneous Data Sets and Studies},
  journal = {Journal of Machine Learning Research},
  year    = {2012},
  volume  = {13},
  number  = {39},
  pages   = {1097--1157},
  url     = {http://jmlr.org/papers/v13/tsamardinos12a.html}
}