1. 1. J. Mitola, III, G. Q. “Maguire, Cognitive radio: making software radiosmore personal,” IEEE Personal Communication, vol. 6, no. 4, pp. 13-18,1999.
   2. S. Haykin, “Cognitive radio: brain-empowered wirelesscommunications,” IEEE Journal on Selected Areas in Communications,vol. 23, no. 2, pp. 201-220, 2005
   3. A. Goldsmith, S. A. Jafar, I. Maric, S. Srinivasa, “Breaking spectrumgridlock with cognitive radios: an information theoretic perspective,” IEEE Signal Processing Magazine, vol. 24, no. 3, pp. 79-89, 2007.
   4. T. Yucek, H. Arslan, “A survey of spectrum sensing algorithms forcognitive radio applications,” IEEE Communications Surveys & Tutorials, vol. 11, no. 1, pp. 116-130, 2009.
   5. Y. Zeng, Y.-C. Liang, A.T. Hoang, R. Zhang, “A review on spectrumsensing for cognitive radio: challenges and solutions,” EURASIP Journalon Advances in Signal Processing, vol. 2010, no. 1, pp. 1-15, 2010.
   6. A.S. Cacciapuoti, I.F. Akyildiz, L. Paura, “Correlationaware userselection for cooperative spectrum sensing in cognitive radio Ad Hoc networks,” IEEE Journal on Selected Areas in Communications, vol. 30,no. 2, pp. 297-306, 2012.
   7. W. Yue, B. Zheng, Q. Meng, J. Cui, P. Xie, “Robust cooperative spectrumsensing schemes for fading channels in cognitive radio networks,” Science China Information Sciences, vol. 54, no. 2, pp. 348- 359, 2011.
   8. W. Xia, W. Yuan, W. Chen, W. Liu, S. Wang, J. Xu, “Optimization ofcooperative spectrum sensing in Ad-Hoc cognitive radio networks,” in Proc. GLOBECOM, 2010, pp. 1-5.
   9. X. Kang, Y.-C. Liang, H.K. Garg, L. Zhang, “Sensingbased spectrumsharing in cognitive radio networks,” IEEE Transactions on Vehicular Technology, vol. 58, no. 8, pp. 4649-4654, 2009
   10. X. Zhou, G. Y. Li, D. Li, D. Wang, A.C.K. Soong, “Probabilistic resourceallocation for opportunistic spectrum access,” IEEE Transactions onWireless Communications, vol. 9, no. 9, p. 2870-2879, 2010.