1. U.S. FCC: Review of Spectrum Management Practicies. Tech. Rep. Federal Communications Commission (2002)
2. U.S. FCC: Second Report and Order and Memorandum Opinion and Order, in the Matter of Unlicensed Operation in the TV Broadcast Bands Additional Spectrum for Unlicensed Devices Below 900 MHz and in the 3 GHz Band. Tech. Rep. Federal Communications Commission (2008)
3. IEEE 802.22 WG: IEEE 802.22 Working Group on Wireless Regional Area Networks Enabling Rural Broadband Wireless Access Using Cognitive Radio Technology. . [Online; accessed 24-Sep-2010]
http://www.ieee802.org/22/
4. Mitola J, Maguire GQ: Cognitive radio: making software radios more personal. IEEE Personal Commun 1999, 6(4):13-18. 10.1109/98.788210
5. Haykin S: Cognitive radio: brain-empowered wireless communications. IEEE J. Sel. Areas Commun 2005, 23(2):201-220.