IEEE Communications Surveys & Tutorials
IEEE Communications Surveys & Tutorials > 2013 > 15 > 1 > 21 - 38
IEEE Communications Surveys & Tutorials > 2014 > 16 > 98 - 114
IEEE Communications Surveys & Tutorials > 2014 > 16 > 41 - 60
IEEE Communications Surveys & Tutorials > 2013 > 15 > 1 > 21 - 38
IEEE Communications Surveys & Tutorials > 2014 > 16 > 98 - 114
IEEE Communications Surveys & Tutorials > 2014 > 16 > 41 - 60