1. International Energy Outlook 2007;U.S. Energy Information Administration,2007
2. Objective 1: Extend Life, Improve Performance, and Maintain Safety of Current Fleet;U.S. Department of Energy,2001
3. Report of the National Energy Policy Development Group;Office of the President,2001
4. Energy Policy Act of 2005 (EPACT2005);42 USC 14801, 2005,2005