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IEEE Antennas and Wireless Propagation Letters > 2016 > 15 > 1016 - 1019
IEEE Antennas and Wireless Propagation Letters > 2016 > 15 > 214 - 217
IEEE Transactions on Antennas and Propagation > 2011 > 59 > 4 > 1286 - 1298
IEEE Transactions on Antennas and Propagation > 2011 > 59 > 4 > 1275 - 1285
IEEE Transactions on Antennas and Propagation > 2009 > 57 > 1 > 168 - 175