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IEEE Security & Privacy > 2009 > 7 > 5 > 36 - 43
Wuhan University Journal of Natural Sciences > 2008 > 13 > 5 > 523-527
IEEE Security & Privacy > 2009 > 7 > 5 > 36 - 43
Wuhan University Journal of Natural Sciences > 2008 > 13 > 5 > 523-527