@book{7047,
	author = {Davenport, Harold,},
	title = {The higher arithmetic :},
	publisher = {Cambridge University Press,},
	year = {1999.},
	address = {Cambridge, U.K. ;},
	edition = {7th ed.},
	url = {http://www.loc.gov/catdir/description/cam021/00266556.html}
}