@article{WCRE-J-2005-AndreopoulosATW07,
	author        = "Bill Andreopoulos and Aijun An and Vassilios Tzerpos and Xiaogang Wang",
	doi           = "10.1016/j.infsof.2006.10.010",
	journal       = "{Information & Software Technology}",
	number        = 3,
	pages         = "244--254",
	title         = "{Clustering large software systems at multiple layers}",
	volume        = 49,
	year          = 2007,
}