@book{249381,
	author = {Petrov, Yu. P. and Sizikov, V. S. and ebrary, Inc.},
	title = {Well-posed, ill-posed, and intermediate problems with applications},
	publisher = {VSP,},
	year = {c2005.},
	series = {Inverse and ill-posed problems series,},
	address = {Leiden ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10171796}
}