@article {Simula.SE.196,
	title = {Understanding Software Maintenance and Evolution by Analyzing Individual Changes: a Literature Review},
	journal = {Journal of Software Maintenance and Evolution: Research and Practice},
	volume = {21},
	number = {6},
	year = {2009},
	pages = {349-378},
	author = {Hans Christian {Benestad} and Anda, Bente Cecilie Dahlum and Arisholm, Erik}
}
