@inproceedings{FASE-1999-FokkinkV,
	author        = "Wan Fokkink and Chris Verhoef",
	booktitle     = "{Proceedings of the Second International Conference on Fundamental Approaches to Software Engineering}",
	doi           = "10.1007/978-3-540-49020-3_7",
	isbn          = "3-540-65718-5",
	pages         = "98--113",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Conservative Extension in Positive/Negative Conditional Term Rewriting with Applications to Software Renovation Factories}",
	volume        = 1577,
	year          = 1999,
}