1. Li, H., Feng, X., Gan, X., & Cao, Z. (2013). Joint spectrum sensing and transmission strategy for energy-efficient cognitive radio networks. IEEE CROWNCOM, 2013, 99–104.
2. Smart2020: Enabling the low carbon economy in the information age. The Climate Group SMART 2020 Report, 2008. http://www.theclimategroup.org
3. Dejonghe, A., Bougard, B., Pollin, S., Craninckx, J., Bourdoux, A., der Perre, L. V., et al. (2007). Green reconfigurable radio systems. IEEE Signal Processing Magazine, 24(3), 90–101.
4. Zuckerman, D. (2009). Green communications–management included. http://www.green-communications.net/icc09/program.html
5. Mitola, J., & Maguire, G. Q. (1999). Cognitive radio: Making software radios more personal. IEEE Personal Communications, 6(4), 13–18.