1. FCC: ET Docket No 02-135 Spectrum policy task force report. Federal Communications Comission (FCC) (2002)
2. FCC: ET Docket No 02-155 Spectrum policy task force report. Federal Communications Comission (FCC) (2002)
3. FCC: ET Docket No 03-222 Notice of proposed rule making and order. Federal Communications Comission (FCC) (2003)
4. Darpa XG working group: The XG architectural framework rfc v1.0. http://www.darpa.mil/ato/programs/XG/rfc_af.pdf (2003). Last Accessed 30 October 2011
5. Darpa XG working group: The XG vision rfc v1.0. http://www.darpa.mil/ato/programs/XG/rfc_vision.pdf (2003). Last Accessed 30 October 2011