@book{56175,
	author = {Etgen, Garret J., and Etgen, Garret J.,},
	title = {Salas, Hille, Etgen calculus :},
	publisher = {Wiley,},
	year = {�1999.},
	address = {New York :},
	edition = {8th ed. /},
	note = {Includes index.}
}