@book{129072,
	author = {Etgen, Garret J. and Salas, Saturnino L.},
	title = {Salas and Hille's calculus :},
	publisher = {Wiley,},
	year = {c1999.},
	address = {New York :},
	edition = {8th ed. },
	note = {Includes index.}
}