@inbook{ZhaHyv16,
  title = {Nonlinear functional causal models for distinguishing cause from effect},
  booktitle = {Statistics and Causality: Methods for Applied Empirical Research},
  pages = {185--201},
  chapter = {8},
  edition = {1st},
  editors = {Wolfgang Wiedermann and Alexander von Eye},
  publisher = {John Wiley & Sons, Inc.},
  year = {2016},
  author = {Zhang, K. and Hyv{\"a}rinen, A.}
}