1. Joint power and channel allocation for cognitive radios;Digham,2008
2. Spectrum Policy Task Force, FCC, ET Docket No. 02-135, 2002.
3. Dynamic Spectrum Access and Management in Cognitive Radio Networks;Hossain,2009
4. Spatio-temporal spectrum holes and the secondary user;Weiss,2011
5. Sharing spectrum through spectrum policy reform and cognitive radio;Peha;Proc. IEEE,2009