1. ‘NSF spectrum occupancy measurements project summary’, Shared Spectrum Company Report, August, 2005
2. ‘The XG vision, request for comments’, (Prepared by BBN Technologies 2003 July)
3. National Science Foundation: ‘Networking technology and systems (NeTS) program solicitation’, Available online at: http://www.nsf.gov/pubs/2005/nsf05505/nsf05505.htm
4. IEEE 802.22: ‘Working Group on Wireless Regional Area Networks (WRAN)’, Available at: http://grouper.ieee.org/groups/802/22/