1. BLAKEMORE, C., CARPENTER, R., & GEORGESON, M. 1970 Lateral inhibition between orientation detectors in the human visual system. Nature, 288, 37-39.
2. BOUMA, H., & ANDRIESSEN, J.J. 1968 Perceived orientation of isolated line segments. Vision Research, 8, 493-507.
3. BOUMA, H., & ANDRIESSEN, J. J. 1970 Induced changes in the perceived orientation of line segments. Vision Research, 10, 333-349.
4. CHIANG, C. 1968 A new theory to explain geometrical illusion produced by crossing lines. Perceptual & Psychophysics, 3, 174-176.
5. CHIANG, C. 1973 a Annual Report of Institute of Physics, Academia Sinica, Taipei (1972-1973).