http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Entity-relationship approach, the core of conceptual modelling
proceedings of the Ninth International Conference on the Entity-Relationship Approach, Lausanne, Switzerland, 8-10 October, 1990
International Conference on Entity-Relationship Approach 1990 : Lausanne, Switzerland)
Distributors for the U.S. and Canada, Elsevier Science Pub. Co.