@book{82812,
	author = {Apostol, Tom M., and Vélez Cantarell, D. Francisco,},
	title = {Calculus.},
	publisher = {Editorial Reverté,},
	year = {[1984]},
	address = {Barcelona :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/67902/}
}