@book{21016,
	author = {Protter, Murray H. and ebrary, Inc.},
	title = {Basic elements of real analysis},
	publisher = {Springer,},
	year = {c1998.},
	series = {Undergraduate texts in mathematics},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=5006009}
}