Davood Godarzi, Kamran Arshad, Youngwook Ko and Klaus Moessner (2012) Selecting Users in Energy-Efficient Collaborative Spectrum Sensing, IEEE Wireless Communications and Networking Conference (WCNC'12), vol., no., pp.1029-1033, 1-4 April 2012, doi: 10.1109/WCNC.2012.6213924.