Biskup79'

BibTeX

@inproceedings{DBLP:conf/adbt/Biskup79,
  author    = {Joachim Biskup},
  title     = {A Formal Approach to Null Values in Database Relations},
  booktitle = {Advances in Data Base Theory},
  year      = {1979},
  pages     = {299-341},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}