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IEEE Sensors Journal > 2009 > 9 > 9 > 1098 - 1102
2008 Congress on Image and Signal Processing > 2 > 719 - 723
2008 Congress on Image and Signal Processing > 4 > 68 - 72
2008 Congress on Image and Signal Processing > 3 > 801 - 805
IEEE Sensors Journal > 2008 > 8 > 7 > 1292 - 1298