@book{480904,
	author = {SARA 2007 and Miguel, Ian,},
	title = {Abstraction, reformulation, and approximation :},
	publisher = {Springer,},
	year = {2007},
	series = {Lecture notes in computer science, Lecture notes in artificial intelligence},
	address = {Berlin ; New York :},
	url = {http://link.springer.com/10.1007/978-3-540-73580-9}
}