@article{JMLR:v14:hyvarinen13a,
  author  = {Aapo Hyvärinen and Stephen M. Smith},
  title   = {Pairwise Likelihood Ratios for Estimation of Non-Gaussian Structural Equation Models},
  journal = {Journal of Machine Learning Research},
  year    = {2013},
  volume  = {14},
  number  = {4},
  pages   = {111--152},
  url     = {http://jmlr.org/papers/v14/hyvarinen13a.html}
}