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IEEE Latin America Transactions > 2009 > 7 > 3 > 410 - 417
IEEE Communications Letters > 2007 > 11 > 10 > 826 - 828
IEEE Latin America Transactions > 2009 > 7 > 3 > 410 - 417
IEEE Communications Letters > 2007 > 11 > 10 > 826 - 828