@article {23510,
	title = {Joint Relay Scheduling, Channel Access, and Power Allocation for Green Cognitive Radio Communications},
	journal = { IEEE Journal on Selected Areas in Communications (IEEE JSAC)},
	volume = {33},
	year = {2015},
	month = {05/2015},
	pages = {922 - 932},
	publisher = {IEEE},
	author = {Luo, C. and Min, G. and Yu, F. and Zhang, Yan and Yang, L. and Leung, V.}
}
@article {Simula.simula.940,
	title = {Energy-Efficient Spectrum Discovery for Cognitive Radio Green Networks},
	journal = {Mobile Networks and Applications},
	volume = {17},
	number = {1},
	year = {2011},
	pages = {64-74},
	publisher = {Springer},
	author = {Liu, Y. and Xie, Shengli and Zhang, Yan and Yu, Rong and Leung, V.}
}
@article {Simula.ND.255,
	title = {Energy Management Analysis and Enhancement in IEEE 802.16e WirelessMAN},
	journal = {IEEE Transactions on Vehicular Technology},
	volume = {58},
	number = {7},
	year = {2009},
	pages = {3738-3752},
	publisher = {IEEE Transactions on Vehicular Technology},
	author = {Zhang, Yan and Xiao, Y. and Leung, V.}
}
