@book{342887,
	author = {Hatcher, Allen.},
	title = {Algebraic topology /},
	publisher = {Cambridge Univ Pr (Txp),},
	year = {2005.},
	address = {[S.l.] :},
	note = {Import.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0521541867/chopaconline-20}
}