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3. Weiss T A and Jondral F K: ’Spectrum Pooling: An innovative strategy for the enhancement of spectrum efficiency’, IEEE Radio Communications, 58 (March 2004).
4. ’Implementing Spectrum Trading, A Consultation Document’, Radiocommunication Agency, United Kingdom (July 2002) — http://www.ofcom.org.uk/static/archive/ra/topics/spectrumstrat/consult/implementingspectrumtrading.pdf
5. FCC: ’Review of Spectrum Management Practice’, — http:// hraunfoos1.fcc.gov/edocs_public/attachement/DOC-229047A1.pdf