@inproceedings{ECOOP-1999-BertinoGMM,
	author        = "Elisa Bertino and Giovanna Guerrini and Isabella Merlo and Marco Mesiti",
	booktitle     = "{Proceedings of the 13th European Conference on Object-Oriented Programming}",
	doi           = "10.1007/3-540-48743-3_19",
	editor        = "Rachid Guerraoui",
	isbn          = "3-540-66156-5",
	pages         = "416--440",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{An Approach to Classify Semi-structured Objects}",
	volume        = 1628,
	year          = 1999,
}