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IEEE Network > 2016 > 30 > 6 > 14 - 20
IEEE Communications Surveys & Tutorials > 2015 > 17 > 4 > 2296 - 2316
IEEE Network > 2016 > 30 > 6 > 14 - 20
IEEE Communications Surveys & Tutorials > 2015 > 17 > 4 > 2296 - 2316