LitwinMR90'

@article{DBLP:journals/csur/LitwinMR90,
  author    = {Witold Litwin and
               Leo Mark and
               Nick Roussopoulos},
  title     = {Interoperability of Multiple Autonomous Databases},
  journal   = {ACM Comput. Surv.},
  volume    = {22},
  number    = {3},
  year      = {1990},
  pages     = {267-293},
  ee        = {http://doi.acm.org/10.1145/96602.96608},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}