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2. Federal Communications Commission, Unlicensed operation in the TV broadcast bands and additional spectrum for unlicensed devices below 900 MHz in the 3 GHz band, Recommendation ET-Docket No. 04-186 (2004)
3. ECMA International, Standard ECMA-92: MAC and PHY for Operation in TV White Space, Standard Cognitive Network Alliance (2009)
4. Wang, J., Myung, S.S., Santhiveeran, S., Lim, K., Ko, G., Kim, K., Hwang, S.H., Ghosh, M., Gaddam, V., Challapali, K.: First Cognitive Radio Networking Standard for Pesonal/Portable Devices in TV White Spaces. In: IEEE DySPAN 2010, Singapore, pp. 1–12 (2010)
5. Cognitive Networking Alliance, http://www.cognea.org