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IEEE Microwave and Wireless Components Letters > 2011 > 21 > 5 > 267 - 269
Electronics Letters > 2007 > 43 > 17 > 953 - 954
IEEE Microwave and Wireless Components Letters > 2011 > 21 > 5 > 267 - 269
Electronics Letters > 2007 > 43 > 17 > 953 - 954