Biskup83'

BibTeX

@article{DBLP:journals/tods/Biskup83,
  author    = {Joachim Biskup},
  title     = {A Foundation of Codd's Relational Maybe-Operations},
  journal   = {ACM Trans. Database Syst.},
  volume    = {8},
  number    = {4},
  year      = {1983},
  pages     = {608-636},
  ee        = {http://doi.acm.org/10.1145/319996.320014, db/journals/tods/Biskup83.html},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}