@book{36012,
	author = {Leroy, Gondy. and SpringerLink (Online service)},
	title = {Designing User Studies in Informatics},
	publisher = {Springer London :},
	year = {2011.},
	series = {Health Informatics,},
	address = {London :},
	url = {http://dx.doi.org/10.1007/978-0-85729-622-1}
}