Ned Helme, Executive Director, Center for Clean Air Policy, "U.S. State & European Union Climate Policies: Implications for California," Palo Alto, CA, October 7, 2004,
http://www.energy.ca.gov/global_climate_change/04-CCAC-1_advisory_committee/documents/2004-10-07_meeting/2004-10-07_HELME_NED.PDF