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IEEE Communications Surveys & Tutorials > 2017 > 19 > 2 > 855 - 873
IEEE Journal on Selected Areas in Communications > 2016 > 34 > 3 > 510 - 527
IEEE Communications Surveys & Tutorials > 2017 > 19 > 2 > 855 - 873
IEEE Journal on Selected Areas in Communications > 2016 > 34 > 3 > 510 - 527