@book{130412,
	author = {EE.UU. Energy Information Administration},
	publisher = {EIA},
	year = {2001},
	series = {International Petroleum Information},
	address = {Washington},
	note = {Publicación electrónica actualizada anualmente ; Disponible en HTML, PDF y XLS},
	url = {http://www.eia.doe.gov/emeu/international/petroleu.html}
}