@book{13696,
	author = {Okada, Susumu. and Ricker, Werner, and ebrary, Inc.},
	title = {Optimal domain and integral extension of operators},
	publisher = {Birkh�auser,},
	year = {2008.},
	series = {Operator theory, advances, and applications ;},
	address = {Basel ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10253460}
}