@book{6424,
	author = {Maurin, Krzysztof.},
	title = {Methods of Hilbert spaces /},
	publisher = {Polish Scientific Publishers,},
	year = {1967.},
	series = {Polska Akademia Nauk. Monografie matematyczne ;},
	address = {Warszawa :},
	note = {Translation of Metody przestrzeni Hilberta.}
}