1. Cowie, R. I. D. (1987). Rubber rhomboids: Nonrigid interpretation of a rigid structure moving. Perception and Psychophysics, 42, 407–408.
2. Garnham, A. (1988). Artificial intelligence. London: Routledge & Kegan Paul.
3. Graham, M. E. & Rogers, B. J. (1982). Simultaneous and successive contrast effects in the perception of depth from motion and stereoscopic information. Perception, 11, 247–262.
4. Lawton, D., Rieger, J., & Steenstrup, M. (1987). Computational techniques in motion processing. In M. A. Arbib & A. R. Hanson (Eds.) Vision, brain and cooperative computation. (Pp. 419–488.) Cambridge MA: Bradford.
5. Reinhardt-Rutland, A. H. (1990). Detecting orientation of a surface: The rectangularity postulate and primary depth cues. Journal of General Psychology, 117, 391–402.