@inproceedings{ECOOP-1992-HartmannJS,
	author        = "Thorsten Hartmann and Ralf Jungclaus and Gunter Saake",
	booktitle     = "{Proceedings of the Sixth European Conference on Object-Oriented Programming}",
	doi           = "10.1007/BFb0053030",
	editor        = "Ole Lehrmann Madsen",
	isbn          = "3-540-55668-0",
	pages         = "57--77",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Aggregation in a Behaviour Oriented Object Model}",
	volume        = 615,
	year          = 1992,
}