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The Journal of China Universities of Posts and Telecommunications > 2007 > 14 > 2 > 99-102
The Journal of China Universities of Posts and Telecommunications > 2006 > 13 > 2 > 84-89,102
The Journal of China Universities of Posts and Telecommunications > 2007 > 14 > 2 > 99-102
The Journal of China Universities of Posts and Telecommunications > 2006 > 13 > 2 > 84-89,102