@article{JMLR:v18:17-014,
  author  = {Ricardo Silva and Shohei Shimizu},
  title   = {Learning Instrumental Variables with Structural and Non-Gaussianity Assumptions},
  journal = {Journal of Machine Learning Research},
  year    = {2017},
  volume  = {18},
  number  = {120},
  pages   = {1--49},
  url     = {http://jmlr.org/papers/v18/17-014.html}
}