François Bancilhon Gilles Barbedette Véronique Benzaken Claude Delobel Sophie Gamerman Christophe Lécluse Patrick Pfeffer Philippe Richard Fernando Vélez The Design and Implementation of O2, an Object-Oriented Database Systems. 1-32 1988 OODBS db/conf/oodbs/oodbs88.html#BancilhonBBDGLPRV88