@incollection {NIPS2003_AA01,
  author = " Alexander T. Ihler and  Erik B. Sudderth and  William T. Freeman and  Alan S. Willsky",
  title = " Efficient Multiscale Sampling from Products of Gaussian Mixtures",
  booktitle = "Advances in Neural Information Processing Systems 16",
  editor = "Sebastian Thrun and Lawrence Saul and Bernhard {Sch\"{o}lkopf}",
  publisher = "MIT Press",
  address = "Cambridge, MA",
  year = "2004",
  keywords = "nonparametric density estimation, Gaussian mixtures, multiscale representation, KD-tree, Gibbs sampling, importance sampling, belief propagation",
  }