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IEEE Sensors Journal > 2008 > 8 > 7 > 1173 - 1179
IEEE Photonics Technology Letters > 2008 > 20 > 24 > 2081 - 2083
IEEE Sensors Journal > 2008 > 8 > 7 > 1173 - 1179
IEEE Photonics Technology Letters > 2008 > 20 > 24 > 2081 - 2083