Leymann93'

BibTeX

@article{DBLP:journals/is/Leymann93,
  author    = {Frank Leymann},
  title     = {Refinement of enquiries in retrieval systems based on the
               universal relation model},
  journal   = {Inf. Syst.},
  volume    = {18},
  number    = {2},
  year      = {1993},
  pages     = {129-139},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}