Clark77'

BibTeX

@inproceedings{DBLP:conf/adbt/Clark77,
  author    = {Keith L. Clark},
  title     = {Negation as Failure},
  booktitle = {Logic and Data Bases},
  year      = {1977},
  pages     = {293-322},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}