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IEEE Antennas and Wireless Propagation Letters > 2015 > 14 > 1006 - 1009
IEEE Transactions on Antennas and Propagation > 2014 > 62 > 4-1 > 1652 - 1662
IEEE Transactions on Antennas and Propagation > 2014 > 62 > 4-2 > 1983 - 1990
IEEE Antennas and Wireless Propagation Letters > 2014 > 13 > 161 - 164
IEEE Transactions on Antennas and Propagation > 2011 > 59 > 4 > 1275 - 1285