@article{RecoveringRelation,
  title = "Recovering a Relation from a Decomposition using Constraint Satisfaction Techniques",
  author = "P.G.Jeavons",
  year = "1994",
  journal = "Information Sciences",
  number = "78",
  pages = "229--256",
  url = "ftp://ftp.cs.rhul.ac.uk/pub/constraints/recovering.ps",
}