@book{151,
	author = {Barro, Robert J. and Sala-i-Martin, Xavier},
	title = {Crecimiento económico},
	publisher = {Reverté},
	year = {2009},
	address = {Barcelona :},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Crecimiento Economico2-l117563.jpg}
}