Marco A. Casanova, José Mauro Volkmer de Castilho, Antonio Luz Furtado. Properties of Conceptual and External Database Schemas. In Dines Bjørner, editor, Formal Description of Programming Concepts : Proceedings of the IFIP Working Conference on Formal Description of Programming Concepts- II, Garmisch-Partenkirchen, FRG, 1-4 June, 1982. pages 409-430, North-Holland, 1982.
Abstract is missing.