@book{34158,
	author = {Filloy, Eugenio. and Puig, Luis. and SpringerLink (Online service)},
	title = {Educational Algebra},
	publisher = {Springer US,},
	year = {2008.},
	series = {Mathematics Education Library ;},
	address = {Boston, MA :},
	url = {http://dx.doi.org/10.1007/978-0-387-71254-3}
}