@book{131911,
	author = {EE.UU. Energy Information Administration},
	title = {The Transition to Ultra-Low-Sulfur Diesel Fuel: Effects on Prices and Supply},
	publisher = {EIA},
	year = {2001},
	note = {Sitio consultado en julio de 2001 ; Navegadores de Internet},
	url = {http://www.eia.doe.gov/oiaf/servicerpt/ulsd/preface.html}
}