@inproceedings{OOPSLA-1999-EvansD,
	author        = "Huw Evans and Peter Dickman",
	booktitle     = "{Proceedings of the 14th Conference on Object-Oriented Programming, Systems, Languages and Applications}",
	doi           = "10.1145/320384.320430",
	editor        = "Brent Hailpern and Linda M. Northrop and A. Michael Berman",
	isbn          = "1-58113-238-7",
	pages         = "415--434",
	publisher     = "{ACM}",
	title         = "{Zones, Contracts and Absorbing Changes: An Approach to Software Evolution}",
	year          = 1999,
}