@book{130383,
	author = {EE.UU. Energy Information Administration},
	publisher = {EIA},
	year = {2001},
	series = {International Petroleum Monthly},
	address = {Washington},
	note = {Publicación electrónica actualizada mensualmente ; Disponible en TXT},
	url = {http://www.eia.doe.gov/emeu/ipsr/contents.html}
}