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			| R M. Cholewiak
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								M. . Kocsis, R. M. Cholewiak, R. M. Traylor, B. D. Adelstein, E. D. Hirleman,  & H. Z. Tan (2013) Discrimination of real and virtual surfaces with sinusoidal and triangular gratings using the fingertip and stylus, IEEE Transactions on Haptics, 6(2), 181-192
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								R. M. Cholewiak, K. H. Kim, H. Z. Tan,  & B. D. Adelstein (2010) A frequency-domain analysis of haptic gratings, IEEE Transactions on Haptics, 3(1), 3-14
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