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| The IET is a world leading professional organisation sharing and advancing knowledge to promote science, engineering and technology across the world. |
| Joint power and channel allocation for energy-efficient performance of relay-assisted cognitive radio networks based on energy pricing |
| G.Y. Zhang |
| Electronics Letters(2010), 46(23):1571 |
| http://dx.doi.org/10.1049/el.2010.2359 |