LloydST87'

@article{DBLP:journals/jlp/LloydST87,
  author    = {John W. Lloyd and
               Liz Sonenberg and
               Rodney W. Topor},
  title     = {Integrity Constraint Checking in Stratified Databases},
  journal   = {J. Log. Program.},
  volume    = {4},
  number    = {4},
  year      = {1987},
  pages     = {331-343},
  ee        = {http://dx.doi.org/10.1016/0743-1066(87)90009-4},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}