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IEEE Antennas and Wireless Propagation Letters > 2016 > 15 > 1093 - 1096
IEEE Transactions on Antennas and Propagation > 2015 > 63 > 4-2 > 1868 - 1873
IEEE Transactions on Antennas and Propagation > 2013 > 61 > 12 > 5910 - 5922
2009 Asia Pacific Microwave Conference > 774 - 777