@book{2912,
	author = {Akhiezer, N. I. and etc.},
	title = {Theory of linear operators in hilbert space :},
	publisher = {Pitman Publishing,},
	year = {1981.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0273084968/chopaconline-20}
}