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IEEE Communications Surveys & Tutorials > 2016 > 18 > 1 > 68 - 93
IEEE Communications Magazine > 2010 > 48 > 9 > 140 - 150
IEEE Intelligent Systems > 2010 > 25 > 1 > 38 - 47
IEEE Communications Surveys & Tutorials > 2016 > 18 > 1 > 68 - 93
IEEE Communications Magazine > 2010 > 48 > 9 > 140 - 150
IEEE Intelligent Systems > 2010 > 25 > 1 > 38 - 47