@inproceedings{conf/pods/EiterGM94,
  title = "Adding Disjunction to Datalog",
  author = "Thomas Eiter and Georg Gottlob and Heikki Mannila",
  year = "1994",
  booktitle = "{Proceedings of the Thirteenth ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, May 24-26, 1994, Minneapolis, Minnesota}",
  isbn = "0-89791-642-5",
  pages = "267-278",
  publisher = "{ACM} Press",
  url = "http://www.informatik.uni-trier.de/~ley/db/conf/pods/pods94-267.html",
  doi = "10.1145/182591.182639",
}