Eric Andonoff Gilles Hubert Annig Le Parc Gilles Zurfluh Modelling Inheritance, Composition and Relationship Links between Objects, Object Versions and Class Versions 96-111 conf/caise/95 CAiSE 1995 db/conf/caise/caise95.html#AndonoffHPZ95 http://dx.doi.org/10.1007/3-540-59498-1_240