Hainaut90'

@inproceedings{DBLP:conf/er/Hainaut90,
  author    = {Jean-Luc Hainaut},
  title     = {Entity-Relationship Models: Formal Specification and Comparision},
  booktitle = {ER},
  year      = {1990},
  pages     = {53-64},
  crossref  = {DBLP:conf/er/90},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/er/90,
  editor    = {Hannu Kangassalo},
  title     = {Proceedings of the 9th International Conference on Entity-Relationship
               Approach (ER'90), 8-10 October, 1990, Lausanne, Switzerland},
  publisher = {ER Institute},
  year      = {1990},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}