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Electronics Letters > 2016 > 52 > 19 > 1580 - 1582
IET Microwaves, Antennas & Propagation > 2007 > 1 > 1 > 65 - 68
Electronics Letters > 2016 > 52 > 19 > 1580 - 1582
IET Microwaves, Antennas & Propagation > 2007 > 1 > 1 > 65 - 68