@book{21013,
	author = {Andersen, Torben  and Enmark, Anita },
	title = {Integrated Modeling of Telescopes},
	publisher = {Springer New York},
	year = {2011},
	series = {Astrophysics and Space Science Library},
	address = {New York},
	url = {http://doi.org/10.1007/978-1-4614-0149-0}
}