@inproceedings{DBLP:conf/amw/CaliGP10,
  title = "Query Rewriting under Non-Guarded Rules",
  author = "Andrea Cal\`{\i} and Georg Gottlob and Andreas Pieris",
  year = "2010",
  booktitle = "Proceedings of the 4th Alberto Mendelzon International Workshop on Foundations of Data Management (AMW)",
}