F.S. Frome, J.Z. Levinson, J.T. Danielson, and J.E. Clavadetscher, "Shifts in perception of size after adaptation to gratings," Science, vol.14, no.206, pp.1327-1329, Dec. 1979.
D.J. Gelb and H.R. Wilson, "Shifts in perceived size as a function of contrast and temporal modulation," Vision Research, vol.23, no.1, pp.71-82, Jan. 1983.