@book{3300,
	author = {Koopman, Siem Jan and Shephard, Neil},
	title = {Unobserved components and time series econometrics},
	publisher = {Oxford University Press},
	year = {2015},
	address = {Oxford :},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/L126251.jpg}
}