Li Hong Junfei Ma Fangmin Xu Shurong Li Zheng Zhou Optimization of Collaborative Spectrum Sensing for Cognitive Radio. 1730-1733 2008 ICNSC http://dx.doi.org/10.1109/ICNSC.2008.4525502 conf/icnsc/2008 db/conf/icnsc/icnsc2008.html#HongMXLZ08