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IEEE Sensors Journal > 2008 > 8 > 8 > 1422 - 1429
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control > 2003 > 50 > 3 > 203 - 209
IRE Transactions on Industrial Electronics > 1958 > PGIE-7 > 11 - 16
IEEE Sensors Journal > 2008 > 8 > 8 > 1422 - 1429
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control > 2003 > 50 > 3 > 203 - 209
IRE Transactions on Industrial Electronics > 1958 > PGIE-7 > 11 - 16