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IEEE Security & Privacy > 2016 > 14 > 2 > 79 - 87
IEEE Security & Privacy > 2014 > 12 > 5 > 78 - 81
IEEE Security & Privacy > 2009 > 7 > 5 > 56 - 59
IEEE Transactions on Knowledge and Data Engineering > 2008 > 20 > 8 > 1097 - 1110