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IEEE Antennas and Wireless Propagation Letters > 2016 > 15 > 154 - 157
IEEE Microwave and Wireless Components Letters > 2013 > 23 > 1 > 22 - 24
IEEE Antennas and Wireless Propagation Letters > 2013 > 12 > 178 - 181
IEEE Transactions on Microwave Theory and Techniques > 2012 > 60 > 9 > 2808 - 2814
IET Microwaves, Antennas & Propagation > 2008 > 2 > 1 > 66 - 73