W. Lehr and L. W. McKnight, “Wireless Internet access: 3Gvs.WiFi?,” Telecommun. policy, Competition Wirel., Spectr., Service Technol. Wars, Vol. 27, No. 5/6, 2003, pp. 351-370.
 M. A. McHenry, “NSF Spectrum Occupancy Measurements Project Summary,” Shared Spectrum Company Report, Aug. 2005.
 X. Zhu, L. Shen and T. P. Yum, “Analysis of Cognitive Radio Spectrum Access with Optimal Channel Reservation,” IEEE Communications Letters, Vol. 11, No. 4, pp. 304-306, Apr. 2007. doi:10.1109/LCOM.2007.348282
 G. Liu, X. Zhu and L. Hanzo, “Dynamic Spectrum Sharing Models for Cognitive Radio Aided Ad Hoc Networks and Their Performance Analysis,” Proceeding of IEEE GLOBE-COM 2011.
 E. W. M. Wong and C. H. Foh, “Analysis of Cognitive Radio Spectrum Access with Finite User Polulation,” IEEE Communications Letters, Vol. 13, No. 5, 2009, pp. 294-296. doi:10.1109/LCOMM.2009.082113
 G. Liu, X. Zhu and L. Hanzo, “Impact of Variance of Heterogeneous Spectrum on Performance of Cognitive Radio Ad Hoc Network,” IEEE ICC, Vol. 1, No. 1, Jun 2012.
 Tumuluru, V.K.;Ping Wang; Niyato, D.and Wei Song, “Performance Analysis of Cognitive Radio Spectrum Access With Prioritized Traffic,” IEEE Transactions on Vehicular Technology, Vol. 61, No. 4, 2012, pp. 1895-1906. doi:10.1109/TVT.2012.2186471
 P. Zhou, Y. S. Chang and John A. Copeland, “Capacity and Delay Scaling in Cognitive Radio AdHoc Networks: Impact of Primary User Activity,” IEEE Globecom, 2010.
 W. T. Huang and X. B. Wang, “Throughput and Delay Scaling of General Cognitive Networks,” IEEE Infocom, 2011.
 N. Mokari, H. Saeedi and KeivanNavaie, “Channel Coding Increases the Achievable Rate of the Cognitive Networks,” IEEE Communications Letters, Vol. 17, No. 3, March 2013, pp. 495-498.