Perlis88a'

BibTeX

@article{DBLP:journals/ai/Perlis88a,
  author    = {Donald Perlis},
  title     = {Languages with Self-Reference II: Knowledge, Belief, and
               Modality},
  journal   = {Artif. Intell.},
  volume    = {34},
  number    = {2},
  year      = {1988},
  pages     = {179-212},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}