@book{13415,
	author = {Courant, Richard. and John, Fritz.},
	title = {Introduction to calculus and analysis.},
	publisher = {Springer,},
	year = {1998.},
	series = {Classics in mathematics.},
	address = {[S.l.] :},
	edition = {1999th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/354065058X/chopaconline-20}
}