@book{133580,
	author = {Gil', M. I. and ebrary, Inc.},
	title = {Difference equations in normed spaces},
	publisher = {Elsevier,},
	year = {2007.},
	series = {North-Holland mathematics studies ;},
	address = {Amsterdam ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10160340}
}