@article{JMLR:v7:malioutov06a,
  author  = {Dmitry M. Malioutov and Jason K. Johnson and Alan S. Willsky},
  title   = {Walk-Sums and Belief Propagation in Gaussian Graphical Models},
  journal = {Journal of Machine Learning Research},
  year    = {2006},
  volume  = {7},
  number  = {73},
  pages   = {2031--2064},
  url     = {http://jmlr.org/papers/v7/malioutov06a.html}
}