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IEEE Communications Letters > 2015 > 19 > 10 > 1678 - 1681
IEEE Transactions on Communications > 2015 > 63 > 6 > 2031 - 2043
IEEE Transactions on Communications > 2011 > 59 > 4 > 917 - 922
IEEE Transactions on Vehicular Technology > 2010 > 59 > 8 > 4079 - 4092