1. Akyildiz I. F., Lee W. Y., Vuran M. C., Mohanty S. (2006) Next generation/dynamic spectrum access/cognitive radio wireless networks: A survey. Computer Networks 50(13): 2127–2159
2. Cabric, D., Mishra, S. M., & Brodersen, R. W. (November, 2004). Implementation issues in spectrum sensing for cognitive radios. In Conference record of the thirty-eighth asilomar conference on signals, systems and computers (Vol. 1, pp. 772–776).
3. Chen, R., Park, J.-M., & Bian, K. (April, 2008). Robust distributed spectrum sensing in cognitive radio networks. In INFOCOM. The 27th conference on computer communications (pp. 1876–1884). IEEE.
4. Cordeiro, C., Challapali, K., Birru, D., & Sai Shankar, N. (November, 2005). IEEE 802.22: The first worldwide wireless standard based on cognitive radios. In First IEEE international symposium on new frontiers in dynamic spectrum access networks (DySPAN) (pp. 328–337).
5. Force, S. P. T. (2002). Spectrum policy task force report. Federal Communications Commission ET Docket 02 135.