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Mathematical Problems in Engineering
Volume 2015, Article ID 587104, 9 pages
Research Article

Energy-Efficient Relay Selection Scheme for Physical Layer Security in Cognitive Radio Networks

State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received 24 October 2014; Accepted 29 December 2014

Academic Editor: Elmetwally Elabbasy

Copyright © 2015 Li Jiang and Hui Tian. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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