@article{Babar:2011,
	author          = {Muhammad Ali Babar and Patricia Lago and  Arie van Deursen},
	title           = {Empirical research in software architecture: opportunities,               challenges, and approaches},
	journal         = {Empirical Software Engineering},
	year            = {2011},
	volume          = {16},
	number          = {5},
	pages           = {539-543},
	issn            = {1573-7616},
	url             = {http://dx.doi.org/10.1007/s10664-011-9168-6},
	group           = {SE}
}