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IEEE Internet Computing > 2015 > 19 > 1 > 54 - 62
IEEE Security & Privacy > 2014 > 12 > 6 > 108
2010 14th Panhellenic Conference on Informatics > 112 - 117
IEEE Security & Privacy > 2009 > 7 > 4 > 65 - 67
IEEE Internet Computing > 2008 > 12 > 3 > 13 - 21