An Extended Entity-Relationship Model with Multi Level External Views.

@inproceedings{DBLP:conf/er/DeSG81,
  author    = {Prabuddha De and
               Arun Sen and
               Ehud Gudes},
  editor    = {Peter P. Chen},
  title     = {An Extended Entity-Relationship Model with Multi Level External
               Views},
  booktitle = {Entity-Relationship Approach to Information Modeling and Analysis,
               Proceedings of the Second International Conference on the Entity-Relationship
               Approach (ER'81), Washington, DC, USA, October 12-14, 1981},
  publisher = {North-Holland},
  year      = {1981},
  isbn      = {0-444-86747-3},
  pages     = {455-472},
  ee        = {db/conf/er/DeSG81.html},
  crossref  = {DBLP:conf/er/81},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

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