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IEEE Transactions on Communications > 2012 > 60 > 3 > 735 - 746
IEEE Transactions on Antennas and Propagation > 2012 > 60 > 6 > 2970 - 2979
IEEE Transactions on Wireless Communications > 2010 > 9 > 5 > 1686 - 1697
IEEE Communications Letters > 2009 > 13 > 3 > 184 - 186