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2009 IEEE Sensors > 347 - 352
IEEE Photonics Journal > 2009 > 1 > 4 > 225 - 235
2008 IEEE Sensors > 1198 - 1201
IEEE Transactions on Biomedical Engineering > 2008 > 55 > 5 > 1560 - 1571
IEEE Sensors Journal > 2008 > 8 > 7 > 1305 - 1309