@book{29,
	author = {Etgen, Garret J., and Salas, Saturnino L.},
	title = {Salas and Hille's calculus :},
	publisher = {Wiley,},
	year = {c1995.},
	address = {New York :},
	edition = {7th ed. /},
	note = {Rev. ed. of: Calculus : one variable / S.L. Salas, Einar Hille. 6th ed. c1990.}
}