@book{248589,
	author = {Rofe-Beketov, Fedor S. and Khol�kin, Aleksandr M. and ebrary, Inc.},
	title = {Spectral analysis of differential operators},
	publisher = {World Scientific,},
	year = {c2005.},
	series = {World Scientific monograph series in mathematics ;},
	address = {Hackensack, NJ :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10174102}
}