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IEEE Communications Magazine > 2009 > 47 > 2 > 126 - 133
IEEE Transactions on Communications > 2008 > 56 > 7 > 1178 - 1188
IEEE Communications Magazine > 2009 > 47 > 2 > 126 - 133
IEEE Transactions on Communications > 2008 > 56 > 7 > 1178 - 1188