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IEEE Communications Magazine > 2010 > 48 > 6 > 22 - 29
IEEE Transactions on Vehicular Technology > 2010 > 59 > 1 > 406 - 419
IEEE Communications Letters > 2010 > 14 > 5 > 411 - 413
IEEE Transactions on Wireless Communications > 2009 > 8 > 11 > 5520 - 5529