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Electronics Letters > 2015 > 51 > 11 > 849 - 850
IEEE Sensors Journal > 2011 > 11 > 7 > 1527 - 1534
2009 IEEE Sensors > 2031 - 2035
2009 IEEE International Ultrasonics Symposium > 645 - 648
IEEE Sensors Journal > 2008 > 8 > 9 > 1565 - 1570