@inproceedings{loopseriesandbethevariationalboundsin,
  title = {Loop Series and Bethe Variational Bounds in Attractive Graphical Models},
  author = {Alan S. Willsky and Erik B. Sudderth and Martin J. Wainwright},
  year = {2007},
  booktitle = {NeurIPS 2007 12},
  url = {http://papers.nips.cc/paper/3354-loop-series-and-bethe-variational-bounds-in-attractive-graphical-models},
}