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IEEE Communications Magazine > 2009 > 47 > 11 > 112 - 118
IEEE Transactions on Vehicular Technology > 2009 > 58 > 4 > 1942 - 1950
IEEE Communications Magazine > 2009 > 47 > 11 > 112 - 118
IEEE Transactions on Vehicular Technology > 2009 > 58 > 4 > 1942 - 1950