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IEEE Microwave and Wireless Components Letters > 2010 > 20 > 8 > 441 - 443
Electronics Letters > 2008 > 44 > 6 > 419 - 420
IEEE Transactions on Biomedical Engineering > 2008 > 55 > 8 > 2107 - 2109
IEEE Sensors Journal > 2008 > 8 > 7 > 1173 - 1179