@inproceedings{ECOOP-1988-Sorgaard,
	author        = "Pål Sørgaard",
	booktitle     = "{Proceedings of the Second European Conference on Object-Oriented Programming}",
	doi           = "10.1007/3-540-45910-3_19",
	editor        = "Stein Gjessing and Kristen Nygaard",
	isbn          = "3-540-50053-7",
	pages         = "319--334",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Object-Oriented Programming and Computerised Shared Material}",
	volume        = 322,
	year          = 1988,
}