AtzeniT91'

@inproceedings{DBLP:conf/dbpl/AtzeniT91,
  author    = {Paolo Atzeni and
               Riccardo Torlone},
  title     = {Management of Multiple Models: A Metamodel for Conceptual
               Models},
  booktitle = {DBPL},
  year      = {1991},
  pages     = {169-181},
  crossref  = {DBLP:conf/dbpl/91},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/dbpl/91,
  editor    = {Paris C. Kanellakis and
               Joachim W. Schmidt},
  title     = {Database Programming Languages: Bulk Types and Persistent
               Data. 3rd International Workshop, August 27-30, 1991, Nafplion,
               Greece, Proceedings},
  publisher = {Morgan Kaufmann},
  year      = {1991},
  isbn      = {1-55860-242-9},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}