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3[2℄ T. Sato, H. Mamiya, H. Koike, and K. Fuku hi.
Photoelasti Tou h:90transparent rubbery

fa e using a LCD and photoelasti ity.

inter-In UIST

'09: Pro eedings of the 22nd annual ACM sympo-t

sium on User interfa e software and te hnology,
2009.

[3℄ M. Weiss, J. Wagner, Y. Jansen, R. Jennings,

BC4 @A Aï ÇÇª« ¤°·§Ç Õ¤²D ³ÔÕ©Ö×Æ¸« ÌÍÿ½ ¸R. Khoshabeh, J. D. Hollan, and J. Bor hers.
SLAP widgets: bridging the gap between virtualand physi al

ontrols on tabletops.

In CHI '09:

Pro eedings of the 27th internationalon Human fa tors inonferen e

omputing systems, pp. 481{490, New York, NY, USA, 2009. ACM.