BiskupDLM91'

@article{DBLP:journals/eik/BiskupDLM91,
  author    = {Joachim Biskup and
               J{\'a}nos Demetrovics and
               Leonid Libkin and
               Ilya B. Muchnik},
  title     = {On Relational Database Schemes Having Unique Minimal Key},
  journal   = {Elektronische Informationsverarbeitung und Kybernetik},
  volume    = {27},
  number    = {4},
  year      = {1991},
  pages     = {217-225},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}