1. Abraham, S., 2004. Secretary of Energy Tours Air Products, Inc., June 7, 2004, available at 〈http://www.energy.gov/news/1367.htm〉.
2. Adelman, M.A., 2004. The Real Oil Problem. Regulation (Spring), p. 20.
3. American Automobile Association (AAA), Fuel Gauge Report, US Environmental Protection Agency (EPA), US Department of Energy (DOE), American Community Survey from the US Census Bureau, 2005. Gas prices—which cities hit the hardest? 〈http://www.bestplaces.net/docs/studies/gasprices.aspx〉.
4. Andrews, A., 2006. Oil shale: history, incentives, and policy. CRS Report for Congress (April 13, 2006), available at 〈http://ncseonline.org/NLE/CRS/abstract.cfm?NLEid=1618〉.
5. Scenarios for a clean energy future;Brown;Energy Policy,2001