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1 S. Singh, "Statistically robust cognitive radio beamforming" 128-133, 2013
2 K. T. Phan, "Spectrum sharing in wireless networks via QoS-aware secondary multicast beamforming" 57 (57): 2323-2335, 2009
3 Y. Huang, "Robust multicast beamforming for spectrum sharing-based cognitive radios" 60 (60): 527-533, 2012
4 G. Zheng, "Robust cognitive beamforming with bounded channel uncertainties" 57 (57): 4871-4881, 2009
5 G. Zheng, "Robust beamforming in cognitive radio" 9 (9): 570-576, 2010
6 A. Charnes, "Programming with linear fractional functionals" 9 (9): 181-186, 1962
7 Q. Li, "Optimal relay selection and beamforming in MIMO cognitive multi-relay networks" 17 (17): 1188-1191, 2013
8 A. Wiesel, "Linear precoding via conic optimization for fixed MIMO receivers" 54 (54): 161-176, 2006
9 D. Ciochina, "Joint user selection and beamforming in interference limited cognitive radio networks" 1389-1393, 2012
10 H. Du, "Joint transceiver beamforming in MIMO cognitive radio network via second-order cone programming" 60 (60): 781-792, 2012
11 X. Fu, "Joint power management and beamforming for base stations in Cognitive Radio systems" 403-407, 2009
12 M. Bengtsson, "Handbook on Antennas in Wireless Communications" CRC press 2001
13 J. Mitola, "Cognitive radio: making software radios more personal" 6 (6): 13-18, 1999
14 J. Noh, "Beamforming in a multi-user cognitive radio system with partial channel state information" 12 (12): 616-625, 2013
15 Z. Luo, "An Introduction to Convex Optimization for Communications and Signal Processing" 24 (24): 1426-1438, 2006