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IEEE Communications Surveys & Tutorials > 2008 > 10 > 3 > 30 - 45
IEEE Transactions on Network and Service Management > 2004 > 1 > 1 > 21 - 29
IEEE Communications Surveys & Tutorials > 2008 > 10 > 3 > 30 - 45
IEEE Transactions on Network and Service Management > 2004 > 1 > 1 > 21 - 29