Grant80'

BibTeX

@article{DBLP:journals/fuin/Grant80,
  author    = {John Grant},
  title     = {Incomplete Information in a Relational Database},
  journal   = {Fundam. Inform.},
  volume    = {3},
  number    = {3},
  year      = {1980},
  pages     = {363-378},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}