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IEEE Communications Magazine > 2009 > 47 > 6 > 84 - 98
IEEE Transactions on Network and Service Management > 2009 > 6 > 2 > 80 - 94
IEEE Transactions on Vehicular Technology > 2007 > 56 > 1 > 3 - 12
IEEE Communications Magazine > 2007 > 45 > 9 > 124 - 132