@book{77493,
	author = {Estep, Donald J., and ebrary, Inc.},
	title = {Practical analysis in one variable},
	publisher = {Springer,},
	year = {c2002.},
	series = {Undergraduate texts in mathematics},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10047813}
}