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IEEE Communications Letters > 2015 > 19 > 6 > 1017 - 1020
IEEE Transactions on Vehicular Technology > 2015 > 64 > 5 > 2097 - 2107
IEEE Internet of Things Journal > 2015 > 2 > 2 > 133 - 144
IEEE Communications Letters > 2015 > 19 > 6 > 1017 - 1020
IEEE Transactions on Vehicular Technology > 2015 > 64 > 5 > 2097 - 2107
IEEE Internet of Things Journal > 2015 > 2 > 2 > 133 - 144