@article{StructuralTractability,
  author = "David Cohen and Peter Jeavons and Marc Gyssens",
  doi = "10.1016/j.jcss.2007.08.001",
  journal = "Journal of Computer and System Sciences",
  note = "To appear. Earlier, uncorrected, version appears in Proceedings of IJCAI'05, pp. 72--77: \url{http://www.ijcai.org/papers/0521.pdf}",
  title = "A unified theory of structural tractability for constraint satisfaction problems",
  url = "http://web.comlab.ox.ac.uk/oucl/research/areas/constraints/publications/JCSSspreadcut.pdf",
  year = "2007",
}