Brent crude oil trading range in 2013 was narrowest since 2006 - U.S. Energy Information Administration (EIA)
Brent Crude - Wikipedia
Airline margins: squeeze is on as Brent crude oil touches USD80 | CAPA
Oil price rises above $80 for first time in three years - BBC News
Sustainability | Free Full-Text | An Auxiliary Index for Reducing Brent Crude Investment Risk—Evaluating the Price Relationships between Brent Crude and Commodities
Crude Oil Price Grinding Back to Multi-Month High on Positive Fundamentals
Global price of Brent Crude (POILBREUSDA) | FRED | St. Louis Fed