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IEEE Communications Letters > 2017 > 21 > 9 > 2077 - 2080
IEEE Transactions on Vehicular Technology > 2017 > 66 > 6 > 4797 - 4809
IEEE Communications Letters > 2017 > 21 > 4 > 869 - 872
IEEE Communications Letters > 2017 > 21 > 2 > 342 - 345