@article{StructuralDecomposition,
  title = "A Structural Decomposition for Hypergraphs",
  author = "P.G.Jeavons and D.A.Cohen and M.Gyssens",
  year = "1994",
  journal = "Contemporary Mathematics",
  number = "178",
  pages = "161--177",
  url = "ftp://ftp.cs.rhul.ac.uk/pub/constraints/contmath.ps",
}