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IEEE Latin America Transactions > 2011 > 9 > 4 > 510 - 515
IEEE Antennas and Propagation Magazine > 2008 > 50 > 5 > 215 - 221
IEEE Latin America Transactions > 2011 > 9 > 4 > 510 - 515
IEEE Antennas and Propagation Magazine > 2008 > 50 > 5 > 215 - 221