@article {wang2009extended,
	title = {Extended knowledge-based reasoning approach to spectrum sensing for cognitive radio},
	journal = {IEEE Transactions on Mobile Computing},
	volume = {9},
	number = {4},
	year = {2009},
	pages = {465{\textendash}478},
	publisher = {IEEE},
	author = {Wang, Xiao Yu and Wong, Alexander and Ho, Pin-Han}
}
