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IEEE Transactions on Computers > 2014 > 63 > 1 > 218 - 229
IEEE Communications Surveys & Tutorials > 2013 > 15 > 3 > 1389 - 1406
IEEE Transactions on Computers > 2014 > 63 > 1 > 218 - 229
IEEE Communications Surveys & Tutorials > 2013 > 15 > 3 > 1389 - 1406