@book{4377,
	author = {Sheffrin, Steven M. and Soria Gutiérrez, Rosa},
	title = {Expectataivas racionales},
	publisher = {Alianza Editorial},
	year = {1985},
	address = {Madrid :},
	url = {https://www.biblioeco.unsa.edu.ar/pmb/images/libros/L127521.jpg}
}