@book{35672,
	author = {Andrica, Dorin. and Andreescu, Titu. and SpringerLink (Online service)},
	title = {Number Theory},
	publisher = {Birkhäuser Boston,},
	year = {2009.},
	address = {Boston :},
	url = {http://dx.doi.org/10.1007/b11856}
}