@book{lehman85,
	title = {Program Evolution: Processes of Software Change},
	address = {London},
	author = {Meir M. Lehman and L. A. Belady},
	publisher = {Academic Press},
	series = {APIC Studies In Data Processing},
	year = {1985},
	biburl = {http://www.bibsonomy.org/bibtex/21bea83bb8b4d63d4cac2a9dfc33516e7/neilernst},
	isbn = {0-124-42440-6},
	keywords = {evolution seminal software }
}