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IEEE Internet Computing > 2010 > 14 > 6 > 56 - 58
IEEE Systems Journal > 2009 > 3 > 3 > 295 - 303
IEEE Security & Privacy > 2009 > 7 > 1 > 88
Government Information Quarterly > 2006 > 23 > 3-4 > 454-479
Information Economics and Policy > 2003 > 15 > 3 > 363-383