Scintillating grid illusion and extinction illusion --- McAnany, J. J. and Levine, M. W. (2004) The blanking... http://fb.me/46H2ZU7Ic
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Scintillating grid illusion and extinction illusion --- McAnany, J. J. and Levine, M. W. (2004) The blanking... http://fb.me/46H2ZU7Ic