School of Management and Economics, University of Electronic Science and Technology of China, Chengdu, P. R. China; Institute of Electronic Science and Technology, University of Electronic Science and Technology of China, Chengdu, P. R. China.
Institute of Electronic Science and Technology, University of Electronic Science and Technology of China, Chengdu, P. R. China.
Copyright © 2012 Zhongguo Shi, Jing Li et al. This is
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