@inproceedings{RE-1993-Easterbrook,
	author        = "Steve M. Easterbrook",
	booktitle     = "{Proceedings of IEEE International Symposium on Requirements Engineering}",
	doi           = "10.1109/ISRE.1993.324835",
	isbn          = "0-8186-3120-1",
	pages         = "65--72",
	publisher     = "{IEEE}",
	title         = "{Domain modelling with hierarchies of alternative viewpoints}",
	year          = 1993,
}