@article{RojSchTurPet18,
  title = {Invariant Models for Causal Transfer Learning},
  journal = {Journal of Machine Learning Research},
  volume = {19},
  number = {36},
  pages = {1--34},
  year = {2018},
  author = {Rojas-Carulla, M. and Sch{\"o}lkopf, B. and Turner, R. and Peters, J.},
  url = {http://jmlr.org/papers/v19/16-432.html}
}