@book{98660,
	author = {Larsen, Henrik Legind. and Martin-Bautista, Maria J. and SpringerLink (Online service)},
	title = {Flexible Query Answering Systems},
	publisher = {Springer Berlin Heidelberg :},
	year = {2013.},
	series = {Lecture Notes in Computer Science,},
	address = {Berlin, Heidelberg :},
	url = {http://dx.doi.org/10.1007/978-3-642-40769-7}
}