@book{33135,
	author = {Penot, Jean-Paul,},
	title = {Calculus without derivatives},
	publisher = {Springer,},
	year = {c2013.},
	series = {Graduate texts in mathematics ;},
	address = {New York :},
	url = {http://www.columbia.edu/cgi-bin/cul/resolve?clio10188224}
}