1. Bush GW (2007) Executive Order 13,422: Further Amendment to Executive Order 12,866 on Regulatory Planning and Review. Public Papers of the Presidents. General Printing Office, Washington, DC.
2. Clinton WJ (1993) Regulatory Planning and Review, Executive Order 12,866. General Printing Offic, Washington, DC Available from URL: http://www.archives.gov/federal-register/executive-orders/pdf/12866.pdf.
3. EC (European Commission) (2002) Communication from the Commission on Impact Assessment. COM(2002) 276. Brussels.