@inproceedings{ECOOP-1991-Barbedette,
	author        = "Gilles Barbedette",
	booktitle     = "{Proceedings of the Fifth European Conference on Object-Oriented Programming}",
	doi           = "10.1007/BFb0057016",
	editor        = "Pierre America",
	isbn          = "3-540-54262-0",
	pages         = "77--96",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Schema Modifications in the LISPO2 Persistent Object-Oriented Language}",
	volume        = 512,
	year          = 1991,
}