@InProceedings{bhole-opt13,
  author = {Chetan Bhole and Justin Domke and Daniel Gildea},
  title = {Approximate inference using unimodular graphs in dual
  decomposition},
  booktitle = {Optimization for Machine Learning Workshop, NIPS 2013},
  year = {2013},
  URL = {http://www.cs.rochester.edu/~gildea/pubs/bhole-opt13.pdf}
}