@inproceedings{RE-1999-Spence,
	author        = "Ian Spence",
	booktitle     = "{Proceedings of the Fourth International Symposium on Requirements Engineering}",
	doi           = "10.1109/RE.1999.10002",
	isbn          = "0-7695-0188-5",
	pages         = "3--None",
	publisher     = "{IEEE Computer Society}",
	title         = "{Requirements, Use Cases, the UML and The Rational Unified Process}",
	year          = 1999,
}