@article{DBLP:journals/ai/CooperJS10,
  title = "Generalizing constraint satisfaction on trees: Hybrid tractability and variable elimination",
  author = "Martin C. Cooper and Peter G. Jeavons and Andr{\'a}s Z. Salamon",
  year = "2010",
  journal = "Artif. Intell.",
  number = "9-10",
  pages = "570-584",
  volume = "174",
  doi = "10.1016/j.artint.2010.03.002",
}