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IEEE Security & Privacy > 2015 > 13 > 1 > 14 - 21
IEEE Wireless Communications > 2009 > 16 > 2 > 24 - 30
IEEE Communications Surveys & Tutorials > 2008 > 10 > 1 > 70 - 85
IEEE Communications Letters > 2007 > 11 > 8 > 665 - 667