An Object Algebra for Object-Oriented Database Systems.

@article{DBLP:journals/db/AlhajjA93,
  author    = {Reda Alhajj and
               M. Erol Arkun},
  title     = {An Object Algebra for Object-Oriented Database Systems},
  journal   = {DATA BASE},
  volume    = {24},
  number    = {3},
  year      = {1993},
  pages     = {13-22},
  ee        = {db/journals/db/AlhajjA93.html},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

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